safari iphone experimental features

How To : Reset Safari's Experimental Features to the Defaults to Fix or Troubleshoot Browsing Issues

Reset Safari's Experimental Features to the Defaults to Fix or Troubleshoot Browsing Issues

Safari's advanced experimental features give you access to new browser initiatives, upcoming web tools, element changes, behavior adjustments, and other preliminary feature tests in development by Apple. If you use them on your iPhone, you can either improve your Safari experience or wreck it. Resetting the flags provides a fresh start.

Why Use Safari's Experimental Features?

Web developers and WebKit engineers benefit the most from Safari's experimental features menu since they can try out new features in development. They can then provide feedback to Apple to help the company refine and eventually implement those features in a future Safari release. However, regular iPhone users can use all the experimental features just the same.

Experimental Safari WebKit flags that are disabled by default are still being tested internally by Apple and aren't always ready for developer use. In contrast, the enabled ones are fair game for anyone. Many experimental features are useful, like preloading responsive images for faster display, lazy-loading images to reduce bandwidth, and making jump links smoother .

I'm particularly excited about "Scroll to Text Fragment," which would make Safari recognize links that highlight specific text within the webpage like Chrome currently does. Another is "Link Sanitizer," which would presumedly either remove bloat from hyperlink redirects or invalidate hyperlinks for security analysts to avoid opening up malicious content.

How Do You Reset Safari's Experimental Features?

If you like playing around in Safari's advanced experimental settings, whether you're a web developer or just a regular user trying to up your browsing game, things can get out of control fast.

For years , you could easily reset all of Safari's experimental flags back to their defaults on macOS; just go to "Develop" in Safari's menu bar, then choose "Reset All to Defaults" from the "Experimental Features" menu. On iPhone and iPad, it didn't show up until iOS 15.4 and iPadOS 15.4 . Before that, users would resort to asking for screenshots of the default flag settings so they could manually change them back one by one.

Navigate to Settings –> Safari –> Advanced –> Experimental Features, and then scroll to the bottom and tap "Reset All to Defaults." There is no confirmation prompt to deal with, so it immediately returns all the settings to the defaults.

Reset Safari's Experimental Features to the Defaults to Fix or Troubleshoot Browsing Issues

Just updated your iPhone? You'll find new emoji, enhanced security, podcast transcripts, Apple Cash virtual numbers, and other useful features. There are even new additions hidden within Safari. Find out what's new and changed on your iPhone with the iOS 17.4 update.

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A Guide to iOS Safari’s Experimental WebKit Features

Experimental WebKit features in iOS are a key part of Apple’s commitment to providing developers with the tools they need to create cutting-edge web experiences within their apps. These features are constantly changing and evolving with each new release of iOS and updates to the Safari app. While they may not be relevant to the average user, they offer valuable debugging capabilities and insights for web developers.

These experimental features can be accessed through the Safari WebKit Experimental Features settings page. However, it’s important to note that these settings are advanced and could impact various aspects of Safari’s configuration. Unless you have a deep understanding of these features and their implications, it’s generally best to stick with the default settings.

For developers, these experimental WebKit features can be incredibly useful. They allow for testing and debugging of upcoming web technologies, ensuring that apps are ready to take advantage of the latest advancements. By toggling these features on or off, developers can fine-tune their web experiences and ensure optimal performance.

It’s worth mentioning that these experimental features are subject to change and may not be supported in future versions of iOS. Therefore, it’s important for developers to stay up to date with the latest documentation and announcements from Apple to ensure compatibility with upcoming releases.

While the average user may not need to tinker with these experimental features, they play a crucial role in pushing the boundaries of web development and enhancing the overall user experience. By providing developers with the tools they need to test and experiment with new technologies, Apple is encouraging innovation and ensuring that iOS remains at the forefront of web development.

Experimental WebKit features in iOS are a powerful resource for developers, allowing them to debug and optimize web experiences within their apps. While they may not be relevant to the average user, they demonstrate Apple’s commitment to supporting and advancing web development on iOS devices.

What Does Experimental WebKit Features Mean on iPhone?

Experimental WebKit features on iPhone refer to the additional functionalities and capabilities that are being tested and developed by Apple for the Safari browser. These features are not fully stable or officially released yet, but are made available for developers to experiment with and provide feedback.

Here are some key points to understand about experimental WebKit features on iPhone:

1. Testing and development: Apple continuously works on improving the Safari browser by introducing new features and enhancements. Experimental WebKit features are a part of this ongoing development process. They are not yet fully implemented or guaranteed to work flawlessly, but they provide developers with a glimpse of what is being worked on and allow them to test and provide feedback.

2. Accessibility to developers: Apple offers these experimental features to developers so they can integrate and test them within their own apps. This allows developers to explore the potential benefits and drawbacks, identify any issues, and provide valuable feedback to Apple. It also helps developers understand how these features can enhance their web experiences within their apps.

3. Debugging and optimization: Experimental WebKit features enable developers to debug and optimize web experiences within their apps. By accessing these features, developers can identify and fix any issues or bugs that may arise when implementing web content in their apps. This ensures a smoother and more efficient browsing experience for users.

4. Commitment to improvement: Apple’s provision of experimental WebKit features showcases their commitment to continuously improving the Safari browser and enhancing the overall web experience on iPhone. By encouraging developers to test and provide feedback on these features, Apple can gather valuable insights and make necessary improvements before officially releasing them.

Experimental WebKit features on iPhone are a way for Apple to test and improve the Safari browser by providing developers with early access to new functionalities. It allows developers to experiment, debug, and optimize web experiences within their apps, while also providing Apple with valuable feedback for further enhancements.

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Should You Turn Off Experimental Features in Safari?

Turning off experimental features in Safari is not necessary for regular users who are primarily concerned about privacy and security. These experimental features are mainly designed for developers and may change frequently with different iOS releases and Safari updates. However, if you are a developer or have a specific need to use these experimental features, it is important to understand their implications and potential impact on your browsing experience.

Here are some points to consider when deciding whether to turn off experimental features in Safari:

1. Stability: Experimental features are in the testing phase and may not be as stable as the standard features. They may have bugs or compatibility issues with certain websites or apps. If you rely on Safari for your daily browsing needs, it is generally recommended to stick with the stable and fully supported features.

2. Compatibility: Some experimental features might not be compatible with all websites or web technologies. This could result in certain websites not loading properly or functional issues. If you frequently visit a wide variety of websites, it is advisable to disable experimental features to ensure a consistent browsing experience.

3. Security and Privacy: Experimental features may introduce potential security vulnerabilities or compromise your privacy. As they are still being tested, they may not have undergone the same level of scrutiny and security audits as the stable features. Disabling experimental features can help minimize the risk of encountering security vulnerabilities or privacy concerns.

Regular users who prioritize stability, compatibility, security, and privacy are generally better off disabling experimental features in Safari. However, if you are a developer or have specific needs that require the use of these features, it is crucial to understand their implications and proceed with caution.

What Experimental WebKit Features Should Be Off?

When it comes to experimental WebKit features, it is generally recommended to keep them turned off unless you have a specific need for them. Here are some of the experimental WebKit features that should be turned off:

1. CSS Regions: This experimental feature allows content to flow through multiple layout regions, but it is not well-supported across different browsers and may cause compatibility issues.

2. CSS Exclusions: This feature enables the creation of complex shapes for text wrapping and layout, but it is still in the experimental stage and may not work consistently across browsers.

3. CSS Filters: This feature allows you to apply various visual effects to elements using CSS, such as blurring or adjusting colors. However, it is still being developed and may not have consistent support across different browsers.

4. CSS Shapes: This experimental feature allows you to define the shape of an element’s content area, enabling text to flow around non-rectangular shapes. While it can be useful in certain scenarios, it is not widely supported and may cause compatibility issues.

5. WebRTC: This technology enables real-time communication between browsers, such as video calls or file sharing. While it has great potential, it is still considered experimental and may have security vulnerabilities or compatibility issues.

It’s important to note that experimental features are not fully tested and may not work as expected. They are intended for developers to explore and provide feedback, but should not be relied upon for production websites. Therefore, it is generally recommended to keep these experimental WebKit features turned off unless you have a specific need and are familiar with the potential risks and limitations they may bring.

Remember, always test and verify the compatibility and stability of any experimental feature before implementing it in a live environment.

What is Apple Experimental WebKit?

Apple’s experimental WebKit refers to a collection of advanced settings that can be customized to modify various configuration options within the WebKit framework. WebKit is a browser engine developed by Apple that powers the Safari web browser on Mac, iOS, and other Apple devices.

The experimental WebKit settings page provides access to a range of options that can be tweaked to alter the behavior and performance of WebKit. These settings are typically used by developers and advanced users who have a deep understanding of how the browser engine works and want to experiment with different configurations.

It’s important to note that these settings are not intended for casual users or those without technical expertise. Modifying these settings without proper knowledge can have unintended consequences and may negatively impact the browsing experience or even cause compatibility issues with websites.

By default, most users are advised to leave these experimental settings untouched, as they are already optimized for the best performance and compatibility. Only developers or experienced users who understand the implications of their changes should venture into modifying these settings.

Here are a few examples of the types of settings that can be found on the experimental WebKit settings page:

1. Performance-related settings: – Enable hardware acceleration: Utilizes the device’s hardware capabilities to render web content faster. – Enable fast scrolling: Improves the smoothness and responsiveness of scrolling within webpages. – Enable CSS animation smooth scrolling: Enhances the animation effects during scrolling.

2. Privacy and security settings: – Enable experimental features: Allows the testing of new features that may enhance privacy and security. – Control website tracking: Provides options to limit or block cookies and other tracking mechanisms.

3. Developer-oriented settings: – Enable remote debugging: Enables remote debugging of web content for developers. – Enable experimental features in the Web Inspector: Allows testing and access to experimental features within the developer tools.

It’s worth reiterating that these settings should only be modified by individuals who are familiar with their implications and have a specific need or purpose in mind. Modifying these settings without proper knowledge can lead to unexpected results and potential issues.

The experimental webkit features in iOS offer developers the opportunity to enhance and debug their web experiences within their apps. These features are constantly evolving and are updated with each release of iOS and Safari app update. While these experimental features may seem enticing, it is important to note that they are primarily designed for developers and not necessary for regular users.

For the average user, there is no need to tamper with the experimental webkit features in order to configure Safari for better privacy or performance. Unless you have a specific need for a non-common web application that requires a specific experimental feature, it is advisable to leave these settings at their default values.

The “experimental webkit settings” page may be misleadingly named, as it contains advanced settings that can have a significant impact on various configuration items. Unless you are well-versed in these settings and know exactly what you are doing, it is recommended to avoid making changes to them.

The experimental webkit features demonstrate Apple’s commitment to supporting developers and improving the web experience on iOS. However, for the average user, it is best to leave these features untouched and trust in the default settings provided by Apple.

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Explain iOS 12/11 Safari Experimental Features and How to Enable It

Want to know what the iOS 12/11 Safari Experimental Features are? And how to enable it? Check this explanation guide to grab every detail about Safari Experimental WebKit Features.

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Update:  In the last new generation of iOS launching season, we have brought you a detailed explanation of the iOS 11 new feature –  Safari Experimental Features, with 11 options then. And in this season of iOS 12, Apple brings more items to this feature, up to 27 members now, among which some are still the same ones in iOS 11, some are newly added. Surely, some features in iOS 11 have been removed. So to make this guide completed, we will continue with the job, and add the explanation to the other new items. Check them now.

iOS 12/11 Safari Experimental Features

Safari Experimental Features

Even though iOS 11 has been launched for a period, there are still many  hidden features  in iOS 11 awaiting us to find and enjoy. And in this article, we are going to focus on another iOS 11 feature discovery – Safari Experimental Features, also called Safari WebKit Experimental Features. What are they? Can the iOS 11 Safari Experimental Features be  explained ? Don’t worry. Here are the answers in the following content.

Explanation of iOS 12/11 Safari Experimental Features

Safari Experimental Features in iOS 12/11, also named Safari WebKit Experimental Features. Basically/ it is designed for all developers, allowing them to debug web experiences within their apps, and showing how serious Apple treats them. Surely, as a normal iOS 11 users, you can also get some knowledge of these features. Apple aims at obtaining feedback from developers and users who are taking part in the development process. iOS 12 Safari Experimental Features, actually consists of 27 little features (11 features in iOS 11), and they will be explained one by one below:

Constant Properties – Constant properties are initialized at the time of creation and cannot be reinitialized, in other words, new values cannot be pushed. A constant property can be merged, concatenated, combined, zipped, sampled, filtered, and transformed. This iOS 11 Safari Experimental feature prevents you from changing settings in web pages with settings. In other words, preventing website modifications or the changing of their “properties” after they’ve loaded.

CSS display: contents – Removed in iOS 12. The CSS display property specifies the type of rendering box used for an element. It gets rid of HTML from websites but keeps CSS content for the looks. Also, its intelligence enables us to scan HTML to make sure that the minimum CSS can be displayed while stripping the website of its contents.

CSS Spring Animations – This feature emulates website animations as if it is spring, with its websites being season-aware. It works similarly to changing the device date to April in the northern hemisphere.

Link Preload – It is mainly for preventing pre-loaded resources from getting cleared once parsing is done. Link Preload also addresses the memory issues that were found to clear preloaded resources in the previous version.

Remove Legacy WebRTC API – Removed in iOS 12.  With it, web developers can check whether their websites conform to the latest specifications.

Secure Contexts API – Prevent man-in-the-middle attackers from accessing powerful APIs that could further compromise the victim of an attack.

SubresourcIntegrity – Enable browsers to verify that files they fetch are delivered without unexpected manipulation. It works by allowing you to provide a cryptographic hash that a fetched file must match.

Viewport Fit – Removed in iOS 12.  Determine how content is laid out and where text wraps on the web page. The viewport can be larger or smaller than the visible area.

Web Animations – Allow disabling and enabling of all web animations, capable of speeding up web browsing by 1.04998%.

WebGPU – Provide hardware GPU acceleration for mobile websites. If your device doesn’t have a GPU, it tried to connect to the nearest free GPU wirelessly within a range of ~4cm.

Async Frame Scrolling – Make an iframe scrollable on iOS, or more smoothly.

Newly Added in iOS 12 Safari Experimental Features:

Accessibility Object Model:  The Accessibility Object Model (or called AOM), an experimental JavaScript API that allows developers to modify the browser accessibility tree, has four phases, and supports for phase one recently landed in Chrome Canary behind the flag.

Cache API:   The Cache API is a system for storing and retrieving network requests and corresponding responses. These might be regular requests and responses created in the course of running your application, or they could be created solely for the purpose of storing some data in the cache.

The Cache API was created to enable Service Workers to cache network requests so that they can provide appropriate responses even while offline. However, the API can also be used as a general storage mechanism.

Fetch API Request KeepAlive:  By setting the keepalive flag, a developer can make a fetch that will continue working even when a frame is detached. A web developer can use the feature to report events, state updates, and analytics with a small amount of data even when the page is about to be unloaded. This is useful for analytics and other cases where async delivery of data is required without blocking navigations and lessens the need for synchronous XHR which is bad for user experience.

From-Origin Response Header: A way for resources to declare they are unavailable within an embedding context.

The Fullscreen API:  Provides an easy way for web content to be presented using the user’s entire screen. The API lets you easily direct the browser to make an element and its children, if any, occupy the full screen, eliminating all browser user interfaces and other applications from the screen for the duration.

ImageBitmap and OffscreenCanvas:  The ImageBitmap represents a bitmap image that can be drawn to a <canvas> without undue latency. It can be created from a variety of source objects using the createImageBitmap() factory method. ImageBitmap provides an asynchronous and resource-efficient pathway to prepare textures for rendering in WebGL. OffscreenCanvas provides more control over how canvases are rendered. This is a follow-on to the WorkerCanvas proposal and will be merged once the agreement is reached.

ITP Debug Mode: Intelligent Tracking Prevention is a privacy feature that detects which domains have the ability to track the user cross-site and either partition the domain’s cookies or purges its website data altogether.

Storage Access API:  This allows for authenticated embeds while continuing to protect customers’ privacy by default.

VisualViewportAPI: The Visual Viewport API provides an explicit mechanism for querying and modifying the properties of the visual viewport. The visual viewport is the visual portion of a screen excluding on-screen keyboards, areas outside of a pinch-zoom area, or any other on-screen artifact that doesn’t scale with the dimensions of a page.

WebGL 2.0 is a long-awaited feature upgrade that delivers the OpenGL ES 3.0 feature set, bringing the browser’s graphical capabilities closer to the state of the art.

ASTC Texture Support:  ASTC stands for Adaptive Scalable Texture Compression, a lossy block-based texture compression algorithm.

Surely, there are also some iOS 12 Safari Experimental Features, and we don’t have the answer to them yet. And they are Prompt For Storage Acess API Request, Enable MDNS ICE candidates, Color Filter, Cross-Origin-Options HTTP Header, disabled-adaptations, Modern Encrypted Media API.

Enable iOS 12/11 Safari Experimental Features on iPhone/iPad

  • Launch Settings.
  • Scroll down to find Safari, and tap it.
  • Scroll down to click the Advance option.
  • Then you will see the Experimental Features > Tap it.
  • Toggle on the Safari Experimental WebKit Features you want.

Enable iOS 12/11 Safari Experimental Features on iPhone/iPad

Enable iOS 12/11 Safari Experimental Features

The Bottom Line

These are all words about iOS 12/11 Safari Experimental Features. As you have noticed, some of them are still with no answers; So if you have the answer, or find something new about them, you can tell us with messages in the comments, and we will update them as soon as possible, helping more people. Thanks.

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1. How to Retrieve Deleted Safari History on iPhone >

2. How to View Safari History on iCloud Backup >

3. How to Recover Deleted History on iPad >

4. How to Fix: Safari Not Working on iPhone iPad >

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Which Safari Experimental Features To Turn On In IOS 15

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Tab Bar Redesign

The Safari browser in iOS 15 introduces a sleek and intuitive tab bar redesign, enhancing the browsing experience for users. This feature offers a more organized and accessible way to manage multiple tabs, making it easier to navigate through various web pages seamlessly.

The new tab bar design in Safari allows users to view more tabs at once, thanks to its compact and space-efficient layout. By simply swiping left or right on the tab bar, users can effortlessly scroll through their open tabs, enabling quick access to specific web pages without the need to squint or struggle with tiny tab icons.

Moreover, the tab bar redesign introduces a fresh and modern look, with each tab appearing as a neatly arranged, easily identifiable card. This visual enhancement not only adds a touch of elegance to the browsing interface but also facilitates smoother tab management.

With the tab bar redesign, users can enjoy a more streamlined and visually appealing browsing experience, as it eliminates the clutter often associated with numerous open tabs. This improvement not only enhances the overall aesthetics of the Safari browser but also contributes to improved user productivity and efficiency.

In summary, the tab bar redesign in Safari for iOS 15 represents a significant step forward in optimizing tab management and visual appeal. Its intuitive design and enhanced functionality make it a valuable addition to the browsing experience, catering to the evolving needs of users who demand both style and efficiency in their web navigation.

This feature is a testament to Apple's commitment to refining the user experience, and it sets a new standard for tab management in mobile browsers. As users embrace the tab bar redesign, they can look forward to a more enjoyable and organized browsing experience on their iOS devices.

Quick Website Translation

The introduction of Quick Website Translation in Safari for iOS 15 marks a significant advancement in enhancing the accessibility and inclusivity of web content for users worldwide. This innovative feature empowers users to seamlessly translate web pages into their preferred language, breaking down language barriers and expanding access to a diverse range of online information.

With Quick Website Translation, users can effortlessly translate web content with just a few taps, eliminating the need to rely on third-party translation tools or services. This streamlined process not only saves time but also ensures a more integrated and user-friendly browsing experience.

Upon encountering a web page in a foreign language, users can simply tap the translation icon displayed in the address bar. This action prompts Safari to promptly translate the entire page into the user's chosen language, enabling them to comprehend the content with ease. The convenience and immediacy of this feature make it a valuable asset for individuals seeking to access global information without language barriers hindering their browsing experience.

Furthermore, Quick Website Translation in Safari for iOS 15 supports a wide array of languages, catering to diverse linguistic preferences and ensuring that users can engage with web content in a language that resonates with them. This inclusivity fosters a more connected and enriched online experience, allowing users to explore and engage with a broader spectrum of digital content.

From a practical standpoint, Quick Website Translation serves as a powerful tool for facilitating cross-cultural communication and knowledge sharing. It enables users to delve into international news, research, and educational resources, broadening their horizons and fostering a deeper understanding of global perspectives.

In essence, the introduction of Quick Website Translation in Safari for iOS 15 reflects Apple's commitment to promoting accessibility and inclusivity in the digital realm. By integrating this feature into the browsing experience, Apple empowers users to transcend language barriers and engage with online content in a seamless and meaningful manner.

As users embrace Quick Website Translation, they gain the ability to explore the vast landscape of the internet without linguistic limitations, fostering a more interconnected and informed global community. This feature represents a pivotal step towards creating a more inclusive and accessible online environment, where language diversity enriches the digital experience for users worldwide.

VoiceOver Image Descriptions

The integration of VoiceOver Image Descriptions in Safari for iOS 15 represents a significant leap forward in enhancing accessibility for individuals with visual impairments. This groundbreaking feature leverages the power of machine learning to provide spoken descriptions of images encountered during web browsing, enabling users to gain a comprehensive understanding of visual content that may otherwise be inaccessible to them.

VoiceOver Image Descriptions function by utilizing advanced image recognition algorithms to analyze the content of images embedded within web pages. When a user with visual impairments encounters an image while browsing, VoiceOver seamlessly generates an audio description of the image, conveying its essential visual elements and context. This empowers users to form a mental image of the content, enabling them to engage with the visual aspects of web pages in a more meaningful and immersive manner.

The implementation of VoiceOver Image Descriptions in Safari for iOS 15 is a testament to Apple's unwavering commitment to inclusivity and accessibility. By harnessing cutting-edge technology to provide spoken descriptions of images, Apple is fostering a more inclusive digital environment where individuals with visual impairments can fully participate in and benefit from the wealth of visual content available on the web.

Furthermore, VoiceOver Image Descriptions not only enhance the accessibility of web content for individuals with visual impairments but also contribute to a more enriching and equitable browsing experience for all users. By providing spoken descriptions of images, this feature promotes a deeper understanding and appreciation of visual content, transcending barriers and fostering a more inclusive online ecosystem.

From a technical standpoint, the implementation of VoiceOver Image Descriptions underscores Apple's dedication to leveraging artificial intelligence and machine learning to enhance accessibility and enrich the user experience. This innovative approach not only empowers individuals with visual impairments to engage with visual content but also sets a new standard for inclusive design in the digital landscape.

In essence, VoiceOver Image Descriptions in Safari for iOS 15 embody Apple's vision of creating a digital environment where accessibility is seamlessly woven into the fabric of the browsing experience. By providing spoken descriptions of images, this feature empowers users with visual impairments to explore and engage with the visual richness of the web, fostering a more inclusive and equitable online ecosystem for all.

Full Page Translation

The introduction of Full Page Translation in Safari for iOS 15 represents a significant milestone in breaking down language barriers and fostering a more inclusive and interconnected browsing experience for users. This innovative feature empowers individuals to seamlessly translate entire web pages into their preferred language, transcending linguistic limitations and enabling access to a diverse array of online content.

Full Page Translation in Safari for iOS 15 streamlines the process of accessing multilingual web content, offering users a seamless and integrated translation experience. When encountering a web page in a foreign language, users can simply activate the translation feature, prompting Safari to swiftly translate the entire page into their chosen language. This eliminates the need to navigate through fragmented translations or rely on external translation tools, ensuring a cohesive and comprehensible browsing experience.

The convenience and immediacy of Full Page Translation not only save users valuable time but also facilitate a deeper engagement with global digital content. By effortlessly translating entire web pages, users can delve into international news, explore diverse cultural perspectives, and access educational resources in languages that resonate with them. This feature transcends mere language comprehension, fostering a more immersive and enriching browsing experience that promotes cross-cultural knowledge sharing and understanding.

Moreover, Full Page Translation in Safari for iOS 15 supports a wide range of languages, catering to diverse linguistic preferences and ensuring that users can engage with web content in a language that aligns with their cultural and linguistic background. This inclusivity fosters a more connected and enriched online experience, enabling users to explore the vast landscape of the internet without linguistic barriers hindering their digital journey.

From a technical standpoint, the implementation of Full Page Translation underscores Apple's commitment to leveraging advanced language processing capabilities to enhance the browsing experience. By seamlessly translating entire web pages, Apple is not only promoting accessibility but also fostering a more interconnected and informed global community, where language diversity enriches the digital experience for users worldwide.

In essence, Full Page Translation in Safari for iOS 15 embodies Apple's vision of creating a digital environment where language barriers are effortlessly overcome, and users can engage with online content in a seamless and meaningful manner. This feature represents a pivotal step towards creating a more inclusive and accessible online ecosystem, where language diversity enriches the digital experience for users worldwide.

WebM and Ogg Vorbis Support

The inclusion of WebM and Ogg Vorbis support in Safari for iOS 15 marks a significant advancement in expanding the compatibility of the browser with modern multimedia formats. This progressive feature enables users to seamlessly access and interact with a broader range of audio and video content, enhancing the richness and diversity of their digital experiences.

WebM, a widely adopted video format renowned for its efficient compression and high-quality playback, has gained prominence across various online platforms. With Safari's support for WebM, users can enjoy seamless playback of WebM-encoded videos directly within the browser, eliminating the need for third-party plugins or external media players. This streamlined integration not only enhances the accessibility of WebM content but also ensures a more cohesive and immersive multimedia experience for users.

In addition to WebM support, Safari for iOS 15 introduces compatibility with Ogg Vorbis, a popular audio format known for its exceptional sound quality and efficient compression. By embracing Ogg Vorbis, Safari empowers users to enjoy high-fidelity audio content encoded in this format, fostering a more enriching and seamless audio playback experience. This expanded compatibility ensures that users can engage with a diverse array of audio content without encountering compatibility limitations, thereby enhancing the overall multimedia capabilities of the browser.

The integration of WebM and Ogg Vorbis support in Safari for iOS 15 reflects Apple's commitment to staying at the forefront of multimedia technology, ensuring that users can seamlessly access and enjoy the latest audio and video formats without constraints. By embracing these modern multimedia standards, Safari enhances the versatility and inclusivity of the browsing experience, catering to the evolving preferences and expectations of users in the digital age.

Furthermore, the introduction of WebM and Ogg Vorbis support in Safari for iOS 15 underscores Apple's dedication to fostering a more seamless and integrated multimedia experience for users. By eliminating compatibility barriers and embracing modern multimedia standards, Safari empowers users to engage with a diverse range of audio and video content, fostering a more immersive and enriching browsing experience.

In essence, the inclusion of WebM and Ogg Vorbis support in Safari for iOS 15 represents a pivotal step towards creating a more inclusive and versatile multimedia environment within the browser. This feature not only enhances the accessibility of modern multimedia formats but also ensures that users can fully immerse themselves in a diverse array of audio and video content, enriching their digital experiences and reflecting Apple's commitment to innovation and user-centric design.

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How to enable or disable experimental features in Safari?

Experimental features in web browsers refer to functionalities currently in the testing phase and are not yet fully stable or standardized. The main purpose of these features is to allow developers and users to experiment with new functionalities and provide feedback before they become mainstream. These features are often available in the beta versions of browsers or within developer tools.

Table of Content

Experimental Features in Safari

Why experimental features, how to enable or disable the feature flags/experimental features.

On Safari 17.0 the “Experimental Features” section has been renamed to “Feature Flags”. The Feature Flags (Experimental Features) of Safari give you access to:

  • Access to upcoming web tools: Highlights the exciting opportunity to preview cutting-edge browser functionalities.
  • Ideas about web element changes: It emphasizes the glimpse into potential future interactions with web elements.
  • New browser initiatives: Acknowledges the experimental playground for innovative browser features.
  • Behavior adjustments: This points to the ability to fine-tune specific aspects of browsing.
  • Under-test development features: Clarifies the experimental nature and ongoing refinement of these features.

There are several reasons why developers include experimental features in software like Safari:

  • Gather user feedback: This is probably the most important reason. By making early versions of features available to users, developers can get valuable feedback on their usability, effectiveness, and popularity. This helps them refine the features before officially releasing them, leading to a better user experience for everyone.
  • Identify potential issues: Experimental features act as a testing ground to uncover bugs and performance issues before they impact a wider user base. Developers can monitor how users interact with the features and address any problems that arise before the official release.
  • Early access for enthusiasts: Some users enjoy being on the cutting edge and trying out new things. Experimental features offer them a chance to be among the first to experience new functionalities and provide feedback that shapes the final product.

Follow the steps to enable or disable on Mac:

Step 1: Open Safari on your Mac

Step 2: Go to Settings by clicking ‘Safari’ menu available on top left corner next to ‘apple icon’ or by pressing [ cmd + , ].

file

Safari menu in Safari Browser on Mac

Step 3: Navigate to Advanced section.

file

Advanced Section of Safari Setting on Mac

Step 4: Checkmark the checkbox that says Show features for web developers available on bottom of Advanced Settings window.

Step 5: Now, you should see Developer as wll as Feature Flags section next to Advanced section.

file

Feature Flags Section of Safari Setting on Mac

Alternatively, you can access the Feature Flags section by selecting the Develop menu from the options available at the top of the Safari app and then choosing “Feature Flags” from the submenu.

Checked features are active. You can enable or disable the feature by checking the checkbox.

Follow the steps to enable or disable on iOS:

Step 1: Open Setting app on your iPhone.

Step 2: Scroll down until you find Safari and tap on it.

Simulator-Screenshot---iPhone-15-Pro-Max---2024-01-28-at-232934-Medium

Settings app on iPhone 15 Pro Max

Step 3: Scroll all the way down on Safari Setting on your iPhone, to find the Advanced option and tap on it.

Simulator-Screenshot---iPhone-15-Pro-Max---2024-01-28-at-233826-Medium

Safari Settings on iPhone 15 Pro Max

Step 4: Tap on Feature Flags option available on botton of Advanced menu of Safari settings.

Simulator-Screenshot---iPhone-15-Pro-Max---2024-01-28-at-234159-Medium

Advanced Safari Settings on iPhone 15 Pro Max

Checked features are active. You can enable a feature by checking the checkbox.

Simulator-Screenshot---iPhone-15-Pro-Max---2024-01-28-at-234944-Medium

WebKit Feature Flags of Safari on iPhone 15 Pro Max

The Feature Flags (previously known as Experimental Features) section in Safari is primarily aimed at web developers to test and debug upcoming features. However, some features might offer interesting functionalities for general users as well. It’s essential to note it come with certain risks. They may have bugs, security vulnerabilities, or change before reaching a stable release. Users who choose to explore these features should be aware of the potential risks and are encouraged to provide feedback to help shape the development process.

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What are Safari experimental WebKit features on iOS?

Modified Nov. 3, 2023, 8:44 p.m. By Maxime Levesque

The Safari advanced settings on iOS contain a specific menu called Experimental WebKit features. What are these settings? Should I turn off them? I’ll explain what are those experimental features and what to do with them.

Safari experimental WebKit features on iOS are mostly useful for developers that want to try some of the new features implemented in Safari but not activated by default yet or that have been recently enabled. Each entry in this menu corresponds to a specific feature, enabling or disabling it could change the behavior of your Safari browser, should you do it? I’ll answer this and will also detail each of these features.

What are Safari experimental WebKit features useful for?

Should i turn off experimental wekkit features, how to reset experimental webkit features.

Web development is evolving very quickly, new technologies are out every month, and new features are released in every new version of Safari, the Apple web browser . It can be very complicated for the developers to be sure that the web applications they develop are compatible with these new features, or if the new technologies released can be used inside their web applications to make them even better.

The Safari experimental WebKit features help the developers to test the features that will be released in the next version of Safari, or a new technology available but not so much used yet. The developers can enable or disable each of these WebKit features during their tests.

You can find more information on Safari resources here.

The short answer is no, you should not change anything in this menu if you do not know what is the meaning of the feature.

Some of these features are enabled by default, it can be because Apple wants to allow web developers to try what happens when they disable it, or because the feature has been enabled in one of the last versions of Safari. Disabling a feature could change the behavior of Safari and therefore add some bugs you could not understand.

These features are focused on web development and you should not have to change anything in this menu. But a bad update could be released with bugs, which could decrease the battery health faster for example. This is the only case where a manual change from you could be required until Apple releases a fix, but it’s rarely really needed.

If you or someone else changed anything in this menu without understanding the meaning of the feature, you should reset the values to the default ones.

  • Open settings on your iPhone or iPad
  • Open the Safari settings
  • Scroll to the bottom and open Advanced
  • Scroll to the bottom and open Experimental Features/

How to find experimental WebKit features in Safari settings

  • Scroll to the very bottom and click on Reset All to Defaults

Where to find button to reset Safari experimental WebKit features to default values

  • That’s it, all the experimental WebKit features values have been reset to default ones

What experimental WebKit features should be on?

If you do not want to reset all the values to defaults and just want to be sure what are the values at default, here is the list of enabled features :

The experimental WebKit features that should be on in iOS 17 are :

  • :focus-visible pseudo-class
  • :has() pseudo-class
  • AccessHandle API
  • Aspect ratio of </img> from width and height
  • Async clipboard API
  • Blank anchor target implies rel=noopener
  • Block top-level redirects by third-party iframes
  • BroadcastChannel Origin
  • CSS Accent Color
  • CSS Aspect Ratio
  • CSS Cascade Layers
  • CSS Color 4 Color Types
  • CSS Container Queries
  • CSS Containment
  • CSS Gradient Premultiplied Alpha Interpolation
  • CSS Individual Transform Properties
  • CSS Motion Path
  • CSS Overscroll Behavior
  • CSS overflow: clip support
  • CSS subgrid support
  • CSS text-align-last property
  • CSSOM View Smooth Scrolling
  • Canvas Color Spaces
  • Cross-Origin-Embedder-Policy
  • Cross-Origin-Opener-Policy
  • Defer async scripts until DOMContentLoaded or first-paint
  • Dialog Element
  • Disallow sync XHR during page dismissal
  • Experimental MediaSource Inline Painting
  • Fetch API Request KeepAlive
  • File System Access API
  • Form requestSubmit
  • GPU Process: DOM Rendering
  • GPU Process: WebGL
  • Generic Text Track Cue API
  • HDR Media Capabilities
  • ImageBitmap
  • In-Process Cookie Cache
  • Intersection Observer
  • Lazy image loading
  • Mask WebGL Strings
  • Media Capabilities Extensions
  • Media Session API
  • MediaRecorder
  • NSURLSession WebSocket
  • Opus audio decoder
  • Paint Timing
  • PerformanceNavigationTiming
  • Permissions API
  • Prefer Page Rendering Updates near 60fps
  • Private Click Measurement Fraud Prevention
  • Referrer Policy attribute
  • Remote Playback API
  • RequestVideoFramCallback
  • Resize Observer
  • Resolution media feature
  • Service Worker Navigation Preload
  • SharedWorker
  • SpeechRcognition API
  • Storage API
  • Swap Processes on Cross-Site Navigation
  • Synthetic Editing Commands
  • TranformStream API
  • UserGesture Promise Propagation
  • Visual Viewport API
  • Vorbis audio decoder
  • Web Animations composite operations
  • Web Animations mutable timelines
  • Web Autentication
  • Web Locks API
  • Web Share API Level 2
  • WebGL via Metal
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  • Wheel Event gestures become non-blocking
  • Wheel Event listeners on the root made passive
  • inert attribute

maximelevesque

Maxime Levesque is a technical engineer with more than 5 years of professional experience. He is an expert in computer and phones, mostly on Apple products. Maxime is also the founder of TechBrowser.

Willy - Oct. 18, 2023, 12:44 p.m.

Carole coleman - oct. 22, 2023, 5:51 a.m., maxime levesque - moderator - oct. 22, 2023, 7:47 a.m., post your comment, lastest reviews.

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WebKit Features in Safari 16.4

Mar 27, 2023

by Patrick Angle, Marcos Caceres, Razvan Caliman, Jon Davis, Brady Eidson, Timothy Hatcher, Ryosuke Niwa, and Jen Simmons

Web Push on iOS and iPadOS

Improvements for web apps, web components, javascript and webassembly, images, video, and audio, developer tooling, web inspector, safari web extensions, safari content blockers, new restrictions in lockdown mode, more improvements.

Today, we’re thrilled to tell you about the many additions to WebKit that are included in Safari 16.4. This release is packed with 135 new web features and over 280 polish updates. Let’s take a look.

You can experience Safari 16.4 on macOS Ventura , macOS Monterey, macOS Big Sur, iPadOS 16 , and iOS 16 . Update to Safari 16.4 on macOS Monterey or macOS Big Sur by going to System Preferences → Software Update → More info, and choosing to update Safari. Or update on macOS Ventura, iOS or iPadOS, by going to Settings → General → Software Update.

safari iphone experimental features

iOS and iPadOS 16.4 add support for Web Push to web apps added to the Home Screen. Web Push makes it possible for web developers to send push notifications to their users through the use of Push API , Notifications API , and Service Workers .

Deeply integrated with iOS and iPadOS, Web Push notifications from web apps work exactly like notifications from other apps. They show on the Lock Screen, in Notification Center, and on a paired Apple Watch. Focus provides ways for users to precisely configure when or where to receive Web Push notifications — putting users firmly in control of the experience. For more details, read Web Push for Web Apps on iOS and iPadOS .

WebKit on iOS and iPadOS 16.4 adds support for the Badging API . It allows web app developers to display an app badge count just like any other app on iOS or iPadOS. Permission for a Home Screen web app to use the Badging API is automatically granted when a user gives permission for notifications.

To support notifications and badging for multiple installs of the same web app, WebKit adds support for the id member of the Web Application Manifest standard. Doing so continues to provide users the convenience of saving multiple copies of a web app, perhaps logged in to different accounts separating work and personal usage — which is especially powerful when combined with the ability to customize Home Screen pages with different sets of apps for each Focus .

iOS and iPadOS 16.4 also add support so that third-party web browsers can offer “Add to Home Screen” in the Share menu. For the details on how browsers can implement support, as well more information about all the improvements to web apps, read Web Push for Web Apps on iOS and iPadOS .

We continue to care deeply about both the needs of a wide-range of web developers and the everyday experience of users. Please keep sending us your ideas and requests . There’s more work to do, and we couldn’t be more excited about where this space is headed.

Web Components is a suite of technologies that together make it possible to create reusable custom HTML elements with encapsulated functionality. Safari 16.4 improves support for Web Components with several powerful new capabilities.

Safari 16.4 adds support Declarative Shadow DOM, allowing developers to define shadow DOM without the use of JavaScript. And it adds support for ElementInternals , providing the basis for improved accessibility for web components, while enabling custom elements to participate in forms alongside built-in form elements.

Also, there’s now support for the Imperative Slot API. Slots define where content goes in the template of a custom element. The Imperative Slot API allows developers to specify the assigned node for a slot element in JavaScript for additional flexibility.

Safari 16.4 adds support for quite a few new CSS properties, values, pseudo-classes and syntaxes. We are proud to be leading the way in several areas to the future of graphic design on the web.

Margin Trim

The margin-trim property can be used to eliminate margins from elements that are abutting their container. For example, imagine we have a section element, and inside it we have content consisting of an h2 headline and several paragraphs. The section is styled as a card, with an off-white background and some padding. Like usual, the headline and paragraphs all have top and bottom margins — which provide space between them. But we actually don’t want a margin above the first headline, or after the last paragraph. Those margins get added to the padding, and create more space than what’s desired.

safari iphone experimental features

Often web developers handle this situation by removing the top margin on the headline with h2 { margin-block-start: 0 } and the bottom margin on the last paragraph with p:last-child { margin-block-end: 0 } — and hoping for the best. Problems occur, however, when unexpected content is placed in this box. Maybe another instance starts with an h3 , and no one wrote code to remove the top margin from that h3 . Or a second h2 is written into the text in the middle of the box, and now it’s missing the top margin that it needs.

The margin-trim property allows us to write more robust and flexible code. We can avoid removing margins from individual children, and instead put margin-trim: block on the container.

safari iphone experimental features

This communicates to the browser: please trim away any margins that butt up against the container. The rule margin-trim: block trims margins in the block direction, while margin-trim: inline trims margins in the inline direction.

Try this demo for yourself in Safari 16.4 or Safari Technology Preview to see the results.

Safari 16.4 also adds support for the new line height and root line height units, lh and rlh . Now you can set any measurement relative to the line-height. For example, perhaps you’d like to set the margin above and below your paragraphs to match your line-height.

The lh unit references the current line-height of an element, while the rlh unit references the root line height — much like em and rem.

Safari 16.4 adds support for font-size-adjust . This CSS property provides a way to preserve the apparent size and readability of text when different fonts are being used. While a web developer can tell the browser to typeset text using a specific font size, the reality is that different fonts will render as different visual sizes. You can especially see this difference when more than one font is used in a single paragraph. In the following demo , the body text is set with a serif font, while the code is typeset in a monospace font — and they do not look to be the same size. The resulting differences in x-height can be quite disruptive to reading. The demo also provides a range of font fallback options for different operating systems, which introduces even more complexity. Sometimes the monospace font is bigger than the body text, and other times it’s smaller, depending on which font family is actually used. The font-size-adjust property gives web developers a solution to this problem. In this case, we simply write code { font-size-adjust: 0.47; } to ask the browser to adjust the size of the code font to match the actual glyph size of the body font.

safari iphone experimental features

To round out support for the font size keywords, font-size: xxx-large is now supported in Safari 16.4.

Pseudo-classes

Safari 16.4 also adds support for several new pseudo-classes. Targeting a particular text direction, the :dir() pseudo-class lets you define styles depending on whether the language’s script flows ltr (left-to-right) or rtl ( right-to-left ). For example, perhaps you want to rotate a logo image a bit to the left or right, depending on the text direction:

Along with unprefixing the Fullscreen API (see below), the CSS :fullscreen pseudo-class is also now unprefixed. And in Safari 16.4, the :modal pseudo-class also matches fullscreen elements.

Safari 16.4 adds :has() support for the :lang pseudo-class, making it possible to style any part of a page when a particular language is being used on that page. In addition, the following media pseudo-classes now work dynamically inside of :has() , opening up a world of possibilities for styling when audio and video are in different states of being played or manipulated — :playing , :paused , :seeking , :buffering , :stalled , :picture-in-picture , :volume-locked , and :muted . To learn more about :has() , read Using :has() as a CSS Parent Selector and much more .

Safari 16.4 adds support for Relative Color Syntax. It provides a way to specify a color value in a much more dynamic fashion. Perhaps you want to use a hexadecimal value for blue, but make that color translucent — passing it into the hsl color space to do the calculation.

Or maybe you want to define a color as a variable, and then adjust that color using a mathematical formula in the lch color space, telling it to cut the lightness ( l ) in half with calc(l / 2) , while keeping the chroma ( c ) and hue ( h ) the same.

Relative Color Syntax is powerful. Originally appearing in Safari Technology Preview 122 in Feb 2021, we’ve been waiting for the CSS Working Group to complete its work so we could ship. There isn’t documentation on MDN or Can I Use about Relative Color Syntax yet, but likely will be soon. Meanwhile the Color 5 specification is the place to learn all about it.

Last December, Safari 16.2 added support for color-mix() . Another new way to specify a color value, the functional notation of color-mix makes it possible to tell a browser to mix two different colors together, using a certain color space .

Safari 16.4 adds support for using currentColor with color-mix() . For example, let’s say we want to grab whatever the current text color might be, and mix 50% of it with white to use as a hover color. And we want the mathematical calculations of the mixing to happen in the oklab color space. We can do exactly that with:

Safari 16.2 also added support for Gradient Interpolation Color Spaces last December. It allows the interpolation math of gradients — the method of determining intermediate color values — to happen across different color spaces. This illustration shows the differences between the default sRGB interpolation compared to interpolation in lab and lch color spaces:

safari iphone experimental features

Safari 16.4 adds support for the new system color keywords . Think of them as variables which represent the default colors established by the user, browser, or OS — defaults that change depending on whether the system is set to light mode, dark mode, high contrast mode, etc. For instance, Canvas represents the current default background color of the HTML page. Use system color keywords just like other named colors in CSS. For example, h4 { color: FieldText; } will style h4 headlines to match the default color of text inside form fields. When a user switches from light to dark mode, the h4 color will automatically change as well. Find the full list of system colors in CSS Color level 4 .

Media Queries Syntax Improvements

Safari 16.4 adds support for the syntax improvements from Media Queries level 4. Range syntax provides an alternative way to write out a range of values for width or height. For example, if you want to define styles that are applied when the browser viewport is between 400 and 900 pixels wide, in the original Media Query syntax, you would have written:

Now with the new syntax from Media Queries level 4, you can instead write:

This is the same range syntax that’s been part of Container Queries from its beginning, which shipped in Safari 16.0 .

Media Queries level 4 also brings more understandable syntax for combining queries using boolean logic with and , not , and or . For example:

Can instead be greatly simplified as:

Or, along with the range syntax changes, as:

Custom Properties

Safari 16.4 adds support for CSS Properties and Values API with support for the @property at-rule. It greatly extends the capabilities of CSS variables by allowing developers to specify the syntax of the variable, the inheritance behavior, and the variable initial value — similar to how browser engines define CSS properties.

With @property support, developers can to do things in CSS that were impossible before, like animate gradients or specific parts of transforms.

Web Animations

Safari 16.4 includes some additional improvements for web animations. You can animate custom properties. Animating the blending of mismatched filter lists is now supported. And Safari now supports KeyframeEffect.iterationComposite .

Outline + Border Radius

Until now, if a web developer styled an element that had an outline with a custom outline-style , and that element had curved corners, the outline would not follow the curve in Safari. Now in Safari 16.4, outline always follows the curve of border-radius .

CSS Typed OM

Safari 16.4 adds support for CSS Typed OM , which can be used to expose CSS values as typed JavaScript objects. Input validation for CSSColorValues is also supported as part of CSS Typed OM. Support for Constructible and Adoptable CSSStyleSheet objects also comes to Safari 16.4.

Safari 16.4 now supports lazy loading iframes with loading="lazy" . You might put it on a video embed iframe, for example , to let the browser know if this element is offscreen, it doesn’t need to load until the user is about to scroll it into view.

By the way, you should always include the height and width attributes on iframes, so browsers can reserve space in the layout for it before the iframe has loaded. If you resize the iframe with CSS, be sure to define both width and height in your CSS. You can also use the aspect-ratio property to make sure an iframe keeps it’s shape as it’s resized by CSS.

Now in Safari 16.4, a gray line no longer appears to mark the space where a lazy-loaded image will appear once it’s been loaded.

Safari 16.4 also includes two improvements for <input type="file"> . Now a thumbnail of a selected file will appear on macOS. And the cancel event is supported.

Safari 16.4 brings a number of useful new additions for developers in JavaScript and WebAssembly.

RegExp Lookbehind makes it possible to write Regular Expressions that check what’s before your regexp match. For example, match patterns like (?<=foo)bar matches bar only when there is a foo before it. It works for both positive and negative lookbehind.

JavaScript Import Maps give web developers the same sort of versioned file mapping used in other module systems, without the need for a build step.

Growable SharedArrayBuffer provided a more efficient mechanism for growing an existing buffer for generic raw binary data. And resizable ArrayBuffer allows for resizing of a byte array in JavaScript.

In WebAssembly, we’ve added support for 128-bit SIMD.

Safari 16.4 also includes:

  • Array.fromAsync
  • Array#group and Array#groupToMap
  • Atomics.waitAsync
  • import.meta.resolve()
  • Intl.DurationFormat
  • String#isWellFormed and String#toWellFormed
  • class static initialization blocks
  • Symbols in WeakMap and WeakSet

Safari 16.4 adds support for quite a few new Web API. We prioritized the features you’ve told us you need most.

Offscreen Canvas

When using Canvas, the rendering, animation, and user interaction usually happens on the main execution thread of a web application. Offscreen Canvas provides a canvas that can be rendered off screen, decoupling the DOM and the Canvas API so that the <canvas> element is no longer entirely dependent on the DOM. Rendering can now also be transferred to a worker context, allowing developers to run tasks in a separate thread and avoid heavy work on the main thread that can negatively impact the user experience. The combination of DOM-independent operations and rendering of the main thread can provide a significantly better experience for users, especially on low-power devices. In Safari 16.4 we’ve added Offscreen Canvas support for 2D operations. Support for 3D in Offscreen Canvas is in development.

Fullscreen API

Safari 16.4 now supports the updated and unprefixed Fullscreen API on macOS and iPadOS. Fullscreen API provides a way to present a DOM element’s content so that it fills the user’s entire screen, and to exit fullscreen mode once it’s unneeded. The user is given control over exiting fullscreen mode through various mechanisms, include pressing the ‘Esc’ key on the keyboard, or performing a downwards gesture on touch-enabled devices. This ensures that the user always has the ability to exit fullscreen whenever they desire, preserving their control over the browsing experience.

Screen Orientation API

Along with the Fullscreen API we’ve added preliminary support for Screen Orientation API in Safari 16.4, including:

  • ScreenOrientation.prototype.type returns the screen’s current orientation.
  • ScreenOrientation.prototype.angle returns the screen’s current orientation angle.
  • ScreenOrientation.prototype.onchange event handler, which fires whenever the screen changes orientation.

Support for the lock() and unlock() methods remain experimental features for the time being. If you’d like to try them out, you can enable them in the Settings app on iOS and iPadOS 16.4 via Safari → Advanced → Experimental Features → Screen Orientation API (Locking / Unlocking).

Screen Wake Lock API

The Screen Wake Lock API provides a mechanism to prevent devices from dimming or locking the screen. The API is useful for any application that requires the screen to stay on for an extended period of time to provide uninterrupted user experience, such as a cooking site, or for displaying a QR code.

User Activation API

User Activation API provides web developers with a means to check whether a user meaningfully interacted with a web page. This is useful as some APIs require meaningful “user activation”, such as, a click or touch, before they can be used. Because user activation is based on a timer, the API can be used to check if document currently has user activation as otherwise a call to an API would fail. Read The User Activation API for more details and usage examples.

WebGL Canvas Wide Gamut Color

WebGL canvas now supports the display-p3 wide-gamut color space. To learn more about color space support, read Improving Color on the Web , Wide Gamut Color in CSS with Display-P3 , and Wide Gamut 2D Graphics using HTML Canvas .

Compression Streams API

Compression Streams API allows for compressing and decompressing streams of data in directly in the browser, reducing the need for a third-party JavaScript compression library. This is handy if you need to “gzip” a stream of data to send to a server or to save on the user’s device.

Safari 16.4 also includes many other new Web API features, including:

  • Reporting API
  • Notification API in dedicated workers
  • Permissions API for dedicated workers
  • Service Workers and Shared Workers to the Permissions API
  • gamepad.vibrationActuator
  • A submitter parameter in the FormData constructor
  • COEP violation reporting
  • COOP/COEP navigation violation reporting
  • Fetch Initiator
  • Fetch Metadata Request Headers
  • importing compressed EC keys in WebCrypto
  • loading scripts for nested workers
  • non-autofill credential type for the autocomplete attribute
  • revoking Blob URLs across same-origin contexts
  • isComposing attribute on InputEvent
  • termination of nested workers
  • transfer size metrics for first parties in ServerTiming and PerformanceResourceTiming
  • KeyframeEffect.iterationComposite
  • WEBGL_clip_cull_distance

Last fall, Safari 16 brought support for AVIF images to iOS 16, iPadOS 16 and macOS Ventura. Now with Safari 16.4, AVIF is also supported on macOS Monterey and macOS Big Sur. Updates to our AVIF implementation ensure animated images and images with film grain (noise synthesis) are now fully supported, and that AVIF works inside the <picture> element. We’ve also updated our AVIF implementation to be more lenient in accepting and displaying images that don’t properly conform to the AVIF standard.

Safari 16.4 adds support for the video portion of Web Codecs API . This gives web developers complete control over how media is processed by providing low-level access to the individual frames of a video stream. It’s especially useful for applications that do video editing, video conferencing, or other real-time processing of video.

Media features new to Safari 16.4 also include:

  • Improvements to audio quality for web video conferencing
  • Support for a subset of the AudioSession Web API
  • Support for AVCapture virtual cameras
  • Support for inbound rtp trackIdentifier stat field
  • Support for VTT-based extended audio descriptions
  • Support to allow a site to provide an “alternate” URL to be used during AirPlay

WKPreferences , used by WKWebView on iOS and iPadOS 16.4, adds a new shouldPrintBackgrounds API that allows clients to opt-in to including a pages’s background when printing.

Inspectable WebKit and JavaScriptCore API

Across all platforms supporting WKWebView or JSContext , a new property is available called isInspectable ( inspectable in Objective-C) on macOS 13.4 and iOS, iPadOS, and tvOS 16.4. It defaults to false , and you can set it to true to opt-in to content being inspectable using Web Inspector, even in release builds of apps.

Develop Menu > Patrick's iPhone > Example App

When an app has enabled inspection, it can be inspected from Safari’s Develop menu in the submenu for either the current computer or an attached device. For iOS and iPadOS, you must also have enabled Web Inspector in the Settings app under Safari > Advanced > Web Inspector .

To learn more, read Enabling the Inspection of Web Content in Apps .

When automating Safari 16.4 with safaridriver , we now supports commands for getting elements inside shadow roots, as well as accessibility commands for getting the computed role and label of elements. When adding a cookie with safaridriver , the SameSite attribute is now supported. Improvements have also been made to performing keyboard actions, including better support for modifier keys behind held and support for typing characters represented by multiple code points, including emoji. These improvements make writing cross-browser tests for your website even easier.

Typography Tooling

Web Inspector in Safari 16.4 adds new typography inspection capabilities in the Fonts details sidebar of the Elements Tab.

safari iphone experimental features

Warnings are now shown for synthesized bold and oblique when the rendering engine has to generate these styles for a font that doesn’t provide a suitable style. This may be an indicator that the font file for a declared @font-face was not loaded. Or it may be that the specific value for font-weight or font-style isn’t supported by the used font.

A variable font is a font format that contains instructions on how to generate, from a single file, multiple style variations, such as weight, stretch, slant, optical sizing, and others. Some variable fonts allow for a lot of fine-tuning of their appearance, like the stroke thickness, the ascender height or descender depth, and even the curves or roundness of particular glyphs. These characteristics are expressed as variation axes and they each have a custom value range defined by the type designer.

safari iphone experimental features

The Fonts details sidebar now provides interactive controls to adjust values of variation axes exposed by a variable font and see the results live on the inspected page allowing you to get the font style that’s exactly right for you.

Tooling for Conditionals in CSS

The controls under the new User Preference Overrides popover in the Elements Tab allow you to emulate the states of media features like prefers-reduced-motion and prefers-contrast to ensure that the web content you create adapts to the user’s needs. The toggle to emulate the states of prefers-color-scheme , which was previously a standalone button, has moved to this new popover.

safari iphone experimental features

The Styles panel of the Elements Tab now allows editing the condition text for @media , @container and @supports CSS rules. This allows you to make adjustments in-context and immediately see the results on the inspected page. Here’s a quick tip: edit the condition of @supports to its inverse, like @supports not (display: grid) , to quickly check your progressive enhancement approach to styling and layout.

Badging HTML Elements

safari iphone experimental features

New badges for elements in the DOM tree of the Elements Tab join the existing badges for Grid and Flex containers. The new Scroll badge calls out scrollable elements, and the new Events badge provides quick access to the event listeners associated with the element when clicked. And a new Badges toolbar item makes it easy to show just the badges you are interested in and hide others.

Changes to Web Inspector in Safari 16.4 also include:

  • Elements Tab: Improved visual hierarchy of the Layout sidebar.
  • Elements Tab: Added support for nodes that aren’t visible on the page to appear dimmed in the DOM tree.
  • Console Tab: Added support for console snippets.
  • Sources Tab: Added showing relevant special breakpoints in the Pause Reason section.
  • Sources Tab: Added support for inline breakpoints.
  • Sources Tab: Added support for symbolic breakpoints
  • Network Tab: Added a Path column.
  • Network Tab: Added alphabetic sorting of headers.
  • Network Tab: Added support for per-page network throttling.
  • Network Tab: Added using the Shift key to highlight the initiator or initiated resources.
  • Graphics Tab: Added OpenGL object IDs in the Canvas inspector.
  • Settings Tab: Added a setting to turn off dimming nodes that aren’t visible on the page.
  • Added support for function breakpoints and tracepoints.

Enhancements to Declarative Net Request

Safari is always working on improving support for declarativeNetRequest , the declarative way for web extensions to block and modify network requests. In Safari 16.4, several enhancements have been added to the API:

  • The declarativeNetRequest.setExtensionActionOptions API can be used to configure whether to automatically display the action count (number of blocked loads, etc.) as the extension’s badge text.
  • The modifyHeaders action type has been added to rewrite request and response headers. This action requires granted website permissions for the affected domains and the declarativeNetRequestWithHostAccess permission in the manifest.
  • The redirect action type now requires the declarativeNetRequestWithHostAccess permission in the manifest.
  • The MAX_NUMBER_OF_DYNAMIC_AND_SESSION_RULES property has been added to check the maximum number of combined dynamic and session rules an extension can add. The current limit is set at 5,000 rules.

These enhancements give developers more options to customize their content blocking extensions and provide users with better privacy protection.

SVG Icon Support in Web Extensions

Safari 16.4 now supports SVG images as extension and action icons, giving developers more options for creating high-quality extensions. This support brings Safari in line with Firefox, allowing for consistent experiences across platforms. The ability to scale vector icons appropriately for any device means developers no longer need multiple sizes, simplifying the process of creating polished and professional-looking extensions.

Dynamic Content Scripts

Safari 16.4 introduces support for the new scripting.registerContentScript API, which enables developers to create dynamic content scripts that can be registered, updated, or removed programmatically. This API augments the static content scripts declared in the extension manifest, providing developers with more flexibility in managing content scripts and enabling them to create more advanced features for their extensions.

Toggle Reader Mode

The tabs.toggleReaderMode API has been added to Safari 16.4, which enables extensions to toggle Reader Mode for any tab. This function is particularly useful for extensions that want to enhance the user’s browsing experience by allowing them to focus on the content they want to read. By using this API, developers can create extensions that automate the process of enabling Reader Mode for articles, making it easier and more convenient for users to read online content.

Session Storage

The storage.session API, now supported in Safari 16.4, enables extensions to store data in memory for the duration of the browser session, making it a useful tool for storing data that takes a long time to compute or is needed quickly between non-persistent background page loads. This API is particularly useful for storing sensitive or security-related data, such as decryption keys or authentication tokens, that would be inappropriate to store in local storage. The session storage area is not persisted to disk and is cleared when Safari quits, providing enhanced security and privacy for users.

Background Modules

Developers can now take advantage of modules in background service workers and pages by setting "type": "module" in the background section of the manifest. This allows for more organized and maintainable extension code, making it easier to manage complex codebases. By setting this option, background scripts will be loaded as ES modules, enabling the use of import statements to load dependencies and use the latest JavaScript language features.

Safari 16.4 has added support for :has() selectors in Safari Content Blocker rules. This is a powerful new addition to the declarative content blocking capabilities of Safari, as it allows developers to select and hide parent elements that contain certain child elements. Its inclusion in Safari Content Blocker rules opens up a whole new range of possibilities for content blocking. Now developers can create more nuanced and precise rules that can target specific parts of a web page, making it easier to block unwanted content while preserving the user’s browsing experience. This is yet another example of Safari’s commitment to providing a secure and private browsing experience for its users while also offering developers the tools they need to create innovative and effective extensions.

Lockdown Mode is an optional, extreme protection that’s designed for the very few individuals who, because of who they are or what they do, might be personally targeted by some of the most sophisticated digital threats. Most people are never targeted by attacks of this nature.

If a user chooses to enable Lockdown mode on iOS 16.4, iPadOS 16.4, or macOS Ventura 13.3, Safari will now:

  • Disable binary fonts in the CSS Font Loading API
  • Disable Cache API
  • Disable CacheStorage API
  • Disable ServiceWorkers
  • Disable SVG fonts
  • Disable the WebLocks API
  • Disable WebSpeech API

Safari 16.4 now supports dark mode for plain text files. It has support for smooth key-driven scrolling on macOS. And it adds prevention of redirects to data: or about: URLs.

In addition to the 135 new features, WebKit for Safari 16.4 includes an incredible amount work polishing existing features. We’ve heard from you that you want to know more about the many fixes going into each release of Safari. We’ve done our best to list everything that might be of interest to developers, in this case, 280 of those improvements:

  • Fixed -webkit-mask-box-image: initial to set the correct initial value.
  • Fixed -webkit-radial-gradient parsing accidentally treating several mandatory commas as optional.
  • Fixed ::placeholder to not support writing-mode , direction , or text-orientation.
  • Fixed @supports to not work if not , or , or and isn’t followed by a space.
  • Fixed background-repeat not getting correctly exposed through inline styles.
  • Fixed baseline-shift to allow length or percentage, but not numbers.
  • Fixed contain: inline-size for replaced elements.
  • Fixed CSSPerspective.toMatrix() to throw a TypeError if its length is incompatible with the px unit.
  • Fixed cx , cy , x , and y CSS properties to allow length or percentage, but not numbers.
  • Fixed filter: blur on an absolutely positioned image losing overflow: hidden .
  • Fixed font-face to accept ranges in reverse order, and reverse them for computed styles.
  • Fixed font-style: oblique must allow angles equal to 90deg or -90deg.
  • Fixed font-style: oblique with calc() to allow out-of-range angles and clamp them for computed style.
  • Fixed font-weight to clamp to 1 as a minimum.
  • Fixed font shorthand to reject out-of-range angles for font-style .
  • Fixed font shorthand to reset more longhand properties.
  • Fixed overflow-x: clip causing a sibling image to not load.
  • Fixed overflow: clip not working on SVG elements.
  • Fixed stroke-dasharray parsing to align with standards.
  • Fixed stroke-width and stroke-dashoffset parsing to align with standards.
  • Fixed text-decoration-thickness property not repainting when changed.
  • Fixed allowing calc() that combines percentages and lengths for line-height .
  • Fixed an issue where using box-sizing: border-box causes the calculated aspect-ratio to create negative content sizes.
  • Fixed an issue with a monospace font on a parent causing children with a sans-serif font using rem or rlh units to grow to a larger size.
  • Fixed behavior of cursor: auto over links.
  • Fixed buttons with auto width and height to not set intrinsic margins.
  • Fixed calculating block size to use the correct box-sizing with aspect ratio.
  • Fixed cells overflowing their contents when a table cell has inline children which change writing-mode .
  • Fixed clipping perspective calc() values to 0.
  • Fixed font shorthand to not reject values that happen to have CSS-wide keywords as non-first identifiers in a font family name.
  • Fixed hit testing for double-click selection on overflowing inline content.
  • Fixed honoring the content block size minimum for a <fieldset> element with aspect-ratio applied.
  • Fixed incorrectly positioned line break in contenteditable with tabs.
  • Fixed invalidation for class names within :nth-child() selector lists.
  • Fixed omitting the normal value for line-height from the font shorthand in the specified style, not just the computed style.
  • Fixed pseudo-elements to not be treated as ASCII case-insensitive.
  • Fixed rejecting a selector argument for :nth-of-type or :nth-last-of-type .
  • Fixed serialization order for contain .
  • Fixed strings not wrapped at zero width spaces when word-break: keep-all is set.
  • Fixed supporting <string> as an unprefixed keyframe name.
  • Fixed the :has() pseudo-selector parsing to be unforgiving.
  • Fixed the font-face src descriptor format to allow only specified formats, others are a parse error.
  • Fixed the tz component not accounting for zoom when creating a matrix3d () value.
  • Fixed the computed value for stroke-dasharray to be in px .
  • Fixed the effect of the writing-mode property not getting removed when the property is removed from the root element.
  • Fixed the position of text-shadow used with text-combine-upright .
  • Fixed the title of a style element with an invalid type to never be added to preferred stylesheet set.
  • Fixed the transferred min/max sizes to be constrained by defined sizes for aspect ratio.
  • Fixed the user-agent stylesheet to align hidden elements, abbr , acronym , marquee , and fieldset with HTML specifications.
  • Fixed to always use percentages for computed values of font-stretch , never keywords.
  • Fixed to not require whitespace between of and the selector list in :nth-child or :nth-last-child .
  • Fixed CSS.supports returning false for custom properties.
  • Fixed CSS.supports whitespace handling with !important .
  • Fixed forgiving selectors to not be reported as supported with CSS.supports("selector(...)") .
  • Fixed getComputedStyle() to return a function list for the transform property.
  • Fixed linear-gradient keyword values not getting converted to their rgb() equivalents for getComputedStyle() .

Content Security Policy

  • Fixed updating the Content Security Policy when a new header is sent as part of a 304 response.
  • Fixed <input type="submit"> , <input type="reset">, and <input type="button"> to honor font-size , padding , height , and work with multi-line values.
  • Fixed firing the change event for <input type="file"> when a different file with the same name is selected.
  • Fixed preventing a disabled <fieldset> element from getting focus.
  • Fixed the :out-of-range pseudo class matching for empty input[type=number] .
  • Fixed Array.prototype.indexOf constant-folding to account for a non-numeric index.
  • Fixed Intl.NumberFormat useGrouping handling to match updated specs.
  • Fixed Intl.NumberFormat ignoring maximumFractionDigits with compact notation.
  • Fixed String.prototype.includes incorrectly returning false when the string is empty and the position is past end of the string.
  • Fixed toLocaleLowerCase and toLocaleUpperCase to throw an exception on an empty string.
  • Fixed aligning the parsing of <body link vlink alink> to follow standards.
  • Fixed <legend> to accept more display property values than display: block .

Intelligent Tracking Prevention

  • Fixed user initiated cross-domain link navigations getting counted as Top Frame Redirects.
  • Fixed some display issues with HDR AVIF images.
  • Fixed the accept header to correctly indicate AVIF support.

Lockdown Mode

  • Fixed common cases of missing glyphs due to custom icon fonts.
  • Fixed enumerateDevices may return filtered devices even if page is capturing.
  • Fixed MediaRecorder.stop() firing an additional dataavailable event with bytes after MediaRecorder.pause() .
  • Fixed duplicate timeupdate events.
  • Fixed limiting DOMAudioSession to third-party iframes with microphone access.
  • Fixed MSE to not seek with no seekable range.
  • Fixed mute microphone capture if capture fails to start because microphone is used by a high priority application.
  • Fixed not allowing text selection to start on an HTMLMediaElement.
  • Fixed only requiring a transient user activation for Web Audio rendering.
  • Fixed screen capture to fail gracefully if the window or screen selection takes too long.
  • Fixed switching to alternate <source> element for AirPlay when necessary.
  • Fixed the local WebRTC video element pausing after bluetooth audioinput is disconnected.
  • Fixed trying to use low latency for WebRTC HEVC encoder when available.
  • Fixed unmuting a TikTok video pauses it.
  • Fixed WebVTT styles not applied with in-band tracks.
  • Ensured negative letter-spacing does not pull content outside of the inline box
  • Fixed <div> with border-radius not painted correctly while using jQuery’s .slideToggle() .
  • Fixed border-radius clipping on composited layers.
  • Fixed box-shadow to paint correctly on inline elements.
  • Fixed box-shadow invalidation on inline boxes.
  • Fixed calculating the width of an inline text box using simplified measuring to handle fonts with Zero Width Joiner , Zero Width Non-Joner , or Zero Width No-Break Space .
  • Fixed clearing floats added dynamically to previous siblings.
  • Fixed clipping the source image when the source rectangle is outside of the source image in canvas.
  • Fixed CSS keyframes names to not allow CSS wide keywords.
  • Fixed elements with negative margins not avoiding floats when appropriate.
  • Fixed floating boxes overlapping with their margin boxes.
  • Fixed HTMLImageElement width and height to update layout to return styled dimensions not the image attributes.
  • Fixed ignoring nowrap on <td nowrap="nowrap"> when an absolute width is specified.
  • Fixed incorrect clipping when a layer is present between the column and the content layer.
  • Fixed incorrect static position of absolute positioned elements inside relative positioned containers.
  • Fixed layout for fixed position elements relative to a transformed container.
  • Fixed layout overflow rectangle overflows interfering with the scrollbar.
  • Fixed negative shadow repaint issue.
  • Fixed preventing a focus ring from being painted for anonymous block continuations.
  • Fixed recalculating intrinsic widths in the old containing block chain when an object goes out of flow.
  • Fixed rendering extreme border-radius values.
  • Fixed specified hue interpolation method for hues less than 0 or greater than 360.
  • Fixed tab handling in right-to-left editing.
  • Fixed text selection on flex and grid box items.
  • Fixed the position and thickness of underlines to be device pixel aligned.
  • Fixed transforms for table sections.
  • Fixed transition ellipsis box from “being a display box on the line” to “being an attachment” of the line box.
  • Fixed unexpected overlapping selection with tab in right-to-left context.
  • Fixed updating table rows during simplified layout.
  • Fixed: improved balancing for border, padding, and empty block content.
  • Extensions that request the unlimitedStorage permission no longer need to also request storage .
  • Fixed browser.declarativeNetRequest namespace is now available when an extension has the declarativeNetRequestWithHostAccess permission.
  • Fixed isUrlFilterCaseSensitive declarativeNetRequest rule condition to be false by default.
  • Fixed tabs.onUpdated getting called on tabs that were already closed.
  • Fixed background service worker failing to import scripts.
  • Fixed content scripts not injecting into subframes when extension accesses the page after a navigation.
  • Fixed CORS issue when doing fetch requests from a background service worker.
  • Fixed declarativeNetRequest errors not appearing correctly in the extension’s pane of Safari Settings.
  • Fixed display of extension cookie storage in Web Inspector. Now the extension name is shown instead of a UUID.
  • Fixed declarativeNetRequest rules not loading when an extension is turned off and then on.
  • Fixed result of getMatchedRules() to match other browsers.
  • Fixed browser.webNavigation events firing for hosts where the extension did not have access.
  • Removed Keyboard Shortcut conflict warnings for browser.commands when there are multiple commands without keyboard shortcuts assigned.
  • Fixed overscroll-behavior: none to prevent overscroll when the page is too small to scroll.
  • Fixed <svg:text> to not auto-wrap.
  • Fixed preserveAspectRatio to stop accepting defer .
  • Fixed SVG.currentScale to only set the page zoom for a standalone SVG.
  • Fixed svgElement.setCurrentTime to restrict floats to finite values.
  • Fixed applying changes to fill with currentColor to other colors via CSS.
  • Fixed changes to the filter property getting ignored.
  • Fixed CSS and SVG filters resulting in a low quality, pixelated image.
  • Fixed focusability even when tab-to-links is enabled for <svg:a> .
  • Fixed handling animation freezes when repeatDur is not a multiple of dur .
  • Fixed making sure computed values for baseline-shift CSS property use px unit for lengths.
  • Fixed not forcing display: table-cell , display: inline-table , display: table , and float: none on table cell elements when in quirks mode.
  • Fixed removing the visual border when the table border attribute is removed.
  • Fixed font-optical-sizing: auto having no effect in Safari 16.
  • Fixed directionality of the <bdi> and <input> elements to align with HTML specifications.
  • Fixed handling an invalid dir attribute to not affect directionality.
  • Fixed the default oblique angle from 20deg to 14deg .
  • Fixed the handling of <bdo> .
  • Fixed the order of how @font-palette-values override-colors are applied.
  • Fixed @keyframes rules using an inherit value to update the resolved value when the parent style changes.
  • Fixed Animation.commitStyles() triggering a mutation even when the styles are unchanged.
  • Fixed Animation.startTime and Animation.currentTime setters support for CSSNumberish values.
  • Fixed baseline-shift animation.
  • Fixed baselineShift inherited changes.
  • Fixed commitStyles() failing to commit a relative line-height value.
  • Fixed getKeyframes() serialization of CSS values for an onkeyframe sequence.
  • Fixed rotate: x and transform: rotate(x) to yield the same behavior with SVGs.
  • Fixed word-spacing to support animating between percentage and fixed values.
  • Fixed accounting for non-inherited CSS variables getting interpolated for standard properties on the same element.
  • Fixed accumulating and clamping filter values when blending with "none" .
  • Fixed accumulation support for the filter property.
  • Fixed additivity support for the filter property.
  • Fixed animation of color list custom properties with iterationComposite .
  • Fixed blend transform when iterationComposite is set to accumulate .
  • Fixed blending to account for iterationComposite .
  • Fixed Calculating computed keyframes for shorthand properties.
  • Fixed composite animations to compute blended additive or accumulative keyframes for in-between keyframes.
  • Fixed computing the keyTimes index correctly for discrete values animations.
  • Fixed CSS animations participation in the cascade.
  • Fixed custom properties to support interpolation with a single keyframe.
  • Fixed filter values containing a url() should animate discretely.
  • Fixed interpolating custom properties to take iterationComposite into account.
  • Fixed jittering when animating a rotated image.
  • Fixed keyframes to be recomputed if a custom property registration changes.
  • Fixed keyframes to be recomputed if the CSS variable used is changed.
  • Fixed keyframes to be recomputed when bolder or lighter is used on a font-weight property.
  • Fixed keyframes to be recomputed when a parent element changes value for a custom property set to inherit .
  • Fixed keyframes to be recomputed when a parent element changes value for a non-inherited property set to inherit .
  • Fixed keyframes to be recomputed when the currentcolor value is used on a custom property.
  • Fixed keyframes to be recomputed when the currentcolor value is used.
  • Fixed opacity to use unclamped values for from and to keyframes with iterationComposite .
  • Fixed running a transition on an inherited CSS variable getting reflected on a standard property using that variable as a value.
  • Fixed seamlessly updating the playback rate of an animation.
  • Fixed setting iterationComposite should invalidate the effect.
  • Fixed setting the transition-property to none does not disassociate the CSS Transition from owning the element.
  • Fixed the composite operation of implicit keyframes for CSS Animations to return "replace" .
  • Fixed the timing model for updating animations and sending events.
  • Fixed updating timing to invalidate the effect.
  • Fixed -webkit-user-select: none allowing text to be copied to clipboard.
  • Fixed contentEditable caret getting left aligned instead of centered when the :before pseudo-element is used.
  • Fixed Cross-Origin-Embedder-Policy incorrectly blocking scripts on cache hit.
  • Fixed CSSRule.type to not return values greater than 15.
  • Fixed document.open() to abort all loads when the document is navigating.
  • Fixed document.open() to remove the initial about:blank -ness of the document.
  • Fixed Element.querySelectorAll not obeying element scope with ID.
  • Fixed FileSystemSyncAccessHandle write operation to be quota protected.
  • Fixed getBoundingClientRect() returning the wrong value for <tr> , <td> , and its descendants for a vertical table.
  • Fixed HTMLOutputElement.htmlFor to make it settable.
  • Fixed queryCommandValue("stylewithcss") to always return an empty string.
  • Fixed StorageEvent.initStorageEvent() to align with HTML specifications.
  • Fixed textContent leaving dir=auto content in the wrong direction.
  • Fixed -webkit-user-select: initial content within -webkit-user-select: none should be copied
  • Fixed WorkerGlobalScope.isSecureContext to be based on the owner’s top URL, not the owner’s URL.
  • Fixed a bug where mousedown without mouseup in a frame prevents a click event in another frame.
  • Fixed a sometimes incorrect location after exiting mouse hover.
  • Fixed accepting image/jpg for compatibility.
  • Fixed adding a non-breaking space, instead of a plain space, when it is inserted before an empty text node.
  • Fixed behavior of nested click event on a label element with a checkbox.
  • Fixed BroadcastChannel in a SharedWorker when hosted in a cross-origin iframe.
  • Fixed calculation of direction for text form control elements with dir="auto" .
  • Fixed canvas fallback content focusability computation.
  • Fixed deleting a button element leaving the button’s style in a contenteditable element.
  • Fixed disconnected <fieldset> elements sometimes incorrectly matching :valid or :invalid selectors.
  • Fixed dragging the mouse over a -webkit-user-select: none node can begin selection in another node.
  • Fixed ensuring nested workers get controlled if matching a service worker registration.
  • Fixed errors caught and reported for importScripts() .
  • Fixed escaping “&” in JavaScript URLs for innerHTML and outerHTML .
  • Fixed EventSource to stop allowing trailing data when parsing a retry delay.
  • Fixed Fetch Request object to keep its Blob URL alive.
  • Fixed filled text on a canvas with a web font refreshing or disappearing.
  • Fixed find on page failing to show results in PDFs.
  • Fixed firing an error event when link preload fails synchronously.
  • Fixed form submissions to cancel JavaScript URL navigations.
  • Fixed handing the onerror content attribute on body and frameset elements.
  • Fixed handling opaque origin Blob URLs.
  • Fixed handling text documents to align to modern HTML specifications.
  • Fixed handling the onerror content attribute on <body> and <frameset> elements.
  • Fixed HTMLTemplateElement to have a shadowRootMode attribute.
  • Fixed including alternate stylesheets in document.styleSheets .
  • Fixed incorrect caret movement in some right-to-left contenteditable elements.
  • Fixed incorrect color for videos loaded in a canvas.
  • Fixed incorrect image srcset candidate chosen for <img> cloned from <template> .
  • Fixed incorrectly ignored X-Frame-Options HTTP headers with an empty value.
  • Fixed lazy loading images sometimes not loading.
  • Fixed link elements to be able to fire more than one load or error event.
  • Fixed loading Blob URLs with a fragment from opaque, unique origins.
  • Fixed maintaining the original Content-Type header on a 303 HTTP redirect.
  • Fixed module scripts to always decode using UTF-8.
  • Fixed MouseEventInit to take movementX and movementY .
  • Fixed not dispatching a progress event when reading an empty file or blob using the FileReader API.
  • Fixed not replacing the current history item when navigating a cross-origin iframe to the same URL.
  • Fixed overriding the mimetype for an XHR.
  • Fixed parsing of negative age values in CORS prefetch responses.
  • Fixed pasting of the first newline into text area.
  • Fixed preventing selection for generated counters in ordered lists.
  • Fixed Safari frequently using stale cached resources despite using Reload Page From Origin.
  • Fixed scheduling a navigation to a Blob URL to keep the URL alive until the navigation occurs.
  • Fixed sending Basic authentication via XHR using setRequestHeader() when there is an existing session.
  • Fixed setting style="" to destroy the element’s inline style.
  • Fixed setting the tabIndex of a non-focusable HTMLElement.
  • Fixed system colors not respecting inherited color-scheme values.
  • Fixed textarea placeholder text not disappearing when text is inserted without a user gesture.
  • Fixed the event.keyIdentifier value for F10 and F11 keys.
  • Fixed the click event to not get suppressed on textarea resize.
  • Fixed the computed value for the transform property with SkewY .
  • Fixed the initialization of color properties.
  • Fixed timing of ResizeObserver and IntersectionObserver to match other browsers.
  • Fixed toggling a details element when a summary element receives a click() .
  • Fixed updating Text node children of an option element to not reset the selection of the select element.
  • Fixed using NFC Security Key on iOS.
  • Fixed using WebAuthn credentials registered on iOS 15 if iCloud Keychain is disabled.
  • Fixed WebAuthn sending Attestation as None when requested as Direct.
  • Fixed XHR aborting to align with standards specification
  • Fixed XHR error events to return 0 for loaded and total.
  • Fixed: Made all FileSystemSyncAccessHandle methods synchronous.
  • Fixed: Removed the precision="float" attribute on <input type="range"> .
  • Fixed video textures set to repeat.
  • Fixed “Inspect Element” not highlighting the element.
  • Fixed capturing async stack traces for queueMicrotask .
  • Fixed clicking coalesced events in the timeline selecting the wrong event.
  • Fixed event breakpoints to support case-insensitive and RegExp matching.
  • Fixed slow search with a lot of files in the Open Resource dialog.
  • Fixed sorting prefixed properties below non-prefixed properties in the Computed panel of the Elements Tab.
  • Fixed the always empty Attributes section in the Node panel of the Elements Tab.
  • Fixed the Computed Tab scrolling to the top when a <style> is added to the page.
  • Fixed URL breakpoints to also pause when HTML attributes are set that trigger loads.
  • Fixed “Get Element Rect” to not round to integer values.
  • Fixed automation sessions terminating during navigation.
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Home » Tech Tips » Browsers » How to Enable Experimental Features in Safari Mac and iPhone?

How to Enable Experimental Features in Safari Mac and iPhone?

As with any software development, browsers also follow a life cycle for introducing new features. Edge and Chrome browsers offer beta, developer and canary channels for previewing or testing features before they are available for public use. In addition, you can use flags to test experimental features on the stable version. Though Safari browser does not offer different channels, you can enable experimental features on the stable version from the settings page both on Mac and iPhone/iPad.

Why You Need Experimental Features in Safari?

Safari is a platform dependent browser that works only on Apple devices. Due to this fact, common features that work on Chromium based browsers may not work on Safari unless Apple enable support for them. For example, Chrome by default uses QUIC protocol with HTTP/3 support. This HTTP/3 feature is an experimental feature as of Safari 16 in iOS/macOS. If your organization has an infrastructure to use QUIC protocol , then you should enable that HTTP/3 experimental feature in Safari. Otherwise, functionalities related to QUIC will not work on Safari while they work fine on Chrome.

Enable Experimental Features in Safari Mac

To use experimental features, you should first enable “Develop” menu.

  • Open Safari and go to “Safari > Settings…” menu.

Open Safari Settings Menu in Mac

  • Go to “Advanced” section and enable “Show Develop menu in menu bar” option.

Show Develop Menu in Mac Safari

  • Now, you will see “Developer” and “Feature Flags” tabs are added in Safari settings. Go to “Developer” tab and customize the developer options which you want to use.

Safari Developer Options in Mac

  • There will also be a new “Develop” menu added in Safari’s top menu bar.
  • Open any website and go to “Develop > Feature Flags” menu to go back to the flags settings section.

Feature Flags Menu in Safari

  • You will see a huge list of features and some of them are enabled by default.
  • Use the search box to filter items and click the checkbox in front of any item to enable it.
  • You can find whether the flag is testable, stable or in preview mode under the last column.

Safari Feature Flags

  • If you have enabled or disabled too many items in the list, click on the “Reset Feature Flags” option. This will reset the experimental features section to its initial settings.

You can expect “Stable” flags will be removed and become part of the default Safari app sooner. As mentioned above, HTTP/3 experimental flag available in Safari 16 has been removed and now it becomes part of default Safari 17.

Note that Apple changed the experimental features settings in Safari 17 version. On earlier versions, you can enable the flags from “Develop > Experimental Features” menu without going to settings section. Now, you need to do this from “Feature Flags” settings tab.

Enable or Disable Experimental Features in Safari macOS

Enable Experimental Features in Safari iPhone

You can also enable or disable experimental features in Safari iPhone or iPad app.

  • Open “Settings” app and scroll down to find “Safari” option.
  • Tap on it to open Safari settings page.

Open Safari Settings in iPhone

  • Scroll down to the bottom and tap on “Advanced” option.

Open Advanced Safari Settings in iPhone

  • On the next page, tap on “Experimental Features” showing as a last option.

Open Webkit Experimental Features in Safari iPhone

  • You will see a huge list, turn the switch on or off the enable or disable the required features.

Enable or Disable Experimental Features in Safari iPhone

  • Like macOS, scroll to bottom of the list and tap “Reset All to Defaults” to reset experimental features list to its original state.

How to Know the List of Experimental Features?

Apple uses WebKit browser engine and release new WebKit experimental features frequently. You can get the latest updates from the Apple’s official WebKit blog . For example, Safari version 16 includes important features like Web Push to use push notifications, Passkeys, Apple Pay support, lazy loading of images and support for installing Web Inspector Extensions.

Final Words

There are many experimental features enabled by default both in Mac and iPhone. Do not change the default settings unless you know what you are doing. Otherwise, it may break some websites or does not allow the browser to work properly. Good thing is that you can easily reset experimental features list to original settings and bring the site or browser to working condition.

About Nagasundaram Arumugham

Naga is the founder and chief content editor of WebNots. He has over 20 years of experience in technology field and published more than 2000 articles.

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Leave your reply.

Experimental features menu seems to have been disappeared from Safari 17.2’s experimental features menu How to find the same commands ? thanks

Now, all experimental flags are moved under “Feature Flags” settings tab section in Safari. The article is updated accordingly.

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How to Configure Safari for Privacy on iOS Devices (UPDATED FOR iOS 16.2)

This post was originally published on 2 OCT 2020 ; it has since been updated and revised.

Though Safari is a closed-source browser, some users may wish to use with their Apple devices.

This how-to guide will show you how to increase your data privacy and security while using Safari. This guide tries to balance of privacy and security versus convenience.

"Points of decision," exist in this guide, where users should choose between security/privacy and convenience at their own discretion. where you pretty much choose between security/privacy or convenience at your own discretion, throughout this guide.

Safari has a privacy "ceiling." Users seeking the most privacy possible in their browsers should consider installing and using a privacy-oriented browser for iOS.

Update Safari and iOS

One of the best ways to maintain security (and by extension, privacy) is to keep software like browsers updated to the latest stable version available.

Keeping Safari and the iOS operating system updated is an “easy” method to make sure you are at least protected from exploits of known vulnerabilities. For most users, it’s highly recommended to turn on automatic updates so future updates and be downloaded and installed when they’re released.

Consider using a different browser

While generally secure, browsers like Edge, Chrome, and Safari have an important matter in common: there’s a “ceiling” to how private you can configure them - especially when compared to privacy-oriented mobile browsers like Brave, Firefox Focus, and SnowHaze.

Therefore, users may want to consider using a privacy-oriented browser over using Safari if privacy is their main concern.

Siri and Search

To keep it short and simple: Siri can be a double-edged sword when it comes to maintaining privacy.

Apple has found itself in hot water of Siri “overstepping,” and consequently violating user privacy. For example, in 2019, Apple confirmed that Siri was recording confidential information from users. This confidential information was made available to the company’s contractors.

Now, Apple has since apologized and addressed those concerns with Siri , but the damage is done.

search options and suggestions for siri setting screen on iphone

Ultimately, as the user, it’s up to you to decide how much you want Siri involved in your web habits. The settings here govern how Siri gathers information related to your search history, both online and off. Users should take a look at Apple’s “Safari Search and Privacy.”

Safari uses Google as the default search engine, which is not at all a privacy-friendly search engine.

You should pick a default search engine that is more privacy friendly than Google or Bing. The options on iOS are limited, so users may want to consider bookmarking privacy-friendly search engine options, like Mojeek.

Safarisearch

For better privacy, you should disable “Search Engine Suggestions” and “Safari Suggestions,” which helps to limit the data sent to the search engine itself and Apple.

You should also disable “Preload Top Hit.” When enabled, Safari will automatically load the top hit in the the Safari address bar. However, this can cause unwanted and and intended behavior, such as connecting to websites the user hasn’t actively clicked/tapped on.

You should enable the pop-up blocker (which is enabled by default.) Pop-ups can be woefully annoying and could cause you to accidentally click on something you did not intend to.

Safarigeneral

Turn off autofill.

If you have any saved contact information or credit cards (that aren’t saved specifically in Apply Pay) on Safari, then you should delete them.

Autofill can easily make mistakes and potentially compromise your privacy in the process. For example, autofill might accidentally captured (and later paste) parts of your social security number, thinking it was part of a credit card number. It may also mistakenly paste saved credit card information into a field not designated for credit card information.

Safariautofill

Keep in mind that some websites enable features/include code that can allow them to see what was typed/pasted into a firm field without the user ever hitting “submit.”

Malicious actors can “trick” Safari into divulging stored autofill contents with a variety of methods such as an XSS attack or any variety of phishing attacks. This could put your payment information and other personal identifiable information (PII), like full name and address at risk.

Privacy and Security

Generally, you should enable the fraud website warning and prevention of cross-site tracking here.

Blocking cookies

This is a point of decision.

Blocking cookies rejects “cookies” (bits of information) from being stored in the browser. Websites use cookies for a variety of things, such as session management (login) or as part of tracking mechanisms.

Safariprivsec

For example, if you enable blocking all cookies, log into a website, then close Safari and subsequently return to that same website, then you will have to login again. This could also apply to sites with personalization options.

If you don’t use Safari often, then it’s recommended to block all cookies so when you do use it, these bits of information are not stored.

This is another point of decision.

When enabled, websites can check whether you have Apple Pay enabled. Apple Pay is fairly secure (and relatively privacy-friendly to boot), so the issue is not so much unknowingly giving out card/payment details.

The main issue is websites may use this information to fingerprint your device. Websites will now 1) you use Apple Pay (or at least have it enabled) and 2) can use this “known” for fingerprinting and/or tracking purposes.

However, Apply Pay is a more secure alternative to giving your card details directly to an online merchant.

Settings for websites

Most settings in this section are dedicated to accessibility. However, we can also modify content blockers, camera, microphone and location permissions in this section.

safari settings screen showing content blockers camera and microphone and location

If you have any third-party content blockers integrated with Safari, then you should go ahead and enable them for all sites you visit.

Generally, it’s recommended to automatically deny any website access to your device’s camera and microphone by default.

With GPS location, we’ve encountered another point of decision.

More privacy-conscious users may want to err on the side of caution (rightfully so) and always deny location details to any website that asks.

However, some users who want to maintain a little bit of convenience, may want to set this to “ask.” There may be times where the user deems legitimate to grant a website access to their GPS-enabled location.

JavaScript is executed on the client (your) side, on your device. In most cases, there is no obvious notification to the user when JavaScript is executed; it can be executed “silently” and without direct user input.

While JavaScript can certainly be used for malicious and privacy-invasive purposes (such as pulling a user’s IP address from behind a VPN in the case of a WebRTC leak), many legit websites run legit scripts to function. As such, disabling JavaScript could break these websites and tank the user experience.

As a very general rule of thumb, users should consider disabling JavaScript only if they are “planning” to visit shadier/untrusted portions of the web.

Experimental Features

Most of the experimental webkit features are for developers. They also change frequently with different releases of iOS and updates to the Safari app. In most cases, “regular” users do not have to tamper with experimental features to configure Safari for better privacy.

Lockdown mode

The launch of iOS 16 saw the introduction of Lockdown Mode for the entire device on which it is enabled. Per Apple, “when Phone is in Lockdown Mode… apps, websites, and features will be strictly limited for security…”

iphone lockdown mode with warning caveat

According to Apple, Lockdown Mode is an “extreme” protection mechanism for iPhone that should only be used if the user thinks they may be targeted by a highly sophisticated cyberattack - think, an attack by an advanced persistent threat (APT) backed by a nation-state entity.

With Lockdown Mode enabled, some web technologies are automatically blocked. Some web fonts and images on websites may not display at all. users can configure apps or websites in Safari to be excluded from the limitations enforced by Lockdown Mode.

According to Cryptee’s proof-of-concept (PoC), Lockdown Mode may make users more susceptible to fingerprinting techniques - for example, Cryptee’s PoC can “tell” whether the user is using Safari in Lockdown Mode. Cryptee also believes apps can detect whether Lockdown Mode is enabled as well.

Should you use Lockdown Mode to harden Safari? It depends on the user. However, users should be aware that Lockdown Mode is a security feature versus a privacy one.

Final thoughts

While Safari can be configured to be reasonably privacy-oriented, it is ultimately a closed-source browser by a Big Tech entity. Safari also engages in telemetry on the “back-end,” which may transmit usage data to Apple.

Also like its competitors, Edge and Chrome, Safari suffers from a “privacy ceiling.” Other privacy-oriented browsers do a better job in respecting and improving user privacy. Users looking for "maximum" privacy from the browsers on their iOS devices should download a privacy-oriented browser.

With that said, stay safe out there!

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Safari Experimental Features: Exploring the Future of Browsing

Peter Graham

Many people use Safari as their go-to web browser. Safari has been known for its fast and efficient performance since its inception. Meanwhile, the browser has consistently provided a conducive atmosphere for experimentation with new features. In this article, we’ll focus on the experimental features of Safari, what they offer, and how you can help in the testing process.

What are Safari Experimental Features?

Experimental features refer to new functionalities in Safari that are still being tested. These features may still be under development or not ready for full release. Safari users test these new functionalities and provide feedback to improve their development and readiness.

How to access Safari Experimental Features

Accessing Safari experimental features is easy. You only need to follow a few simple steps:

  • Open the Safari browser on your Mac computer.
  • Click on Safari>Preferences.
  • In the Preferences window, click on the Advanced tab.
  • Select the “Show Develop menu in the menu bar” option.

That’s it. You can now see the develop menu in the menu bar. From the develop menu, you can access experimental features.

Some Popular Safari Experimental Features

Here are some of the popular experimental features you can find in Safari:

Apple Pay is a mobile payment service provided by Apple. It allows consumers to make payments using an iPhone, iPad, Mac, or Apple Watch. Safari supports Apple Pay on iOS and macOS.

Web Bluetooth

Web Bluetooth is an experimental feature that allows web pages to communicate with nearby Bluetooth devices. This feature is useful for creating web-based applications that use Bluetooth sensors or devices.

Autoplay Blocking

Autoplay blocking is one of the experimental features in Safari that prevents videos from playing automatically on web pages. This feature helps users to avoid noisy and intrusive videos.

Concluding thoughts on Safari Experimental Features

Safari experimental features give users a glimpse of the future of browsing. With these functionalities, users can push the limits of what Safari can do while simultaneously providing feedback to Apple on what works and what needs improvement. Safari has always been synonymous with speed, privacy and security, so using experimental features is safe and reliable. Safari experimental features elevate the browsing experience and give Apple valuable feedback from users to improve their service.

FAQs about Safari Experimental Features

Q: can i disable safari experimental features.

Yes. Open the Safari browser and click on Safari>Preferences>Advanced. Then, deselect the “Show Develop menu in the menu bar” option.

Q: Are Safari Experimental Features safe?

Yes. Safari experimental features are safe, but since they’re still under development, they can sometimes act in unexpected ways or not at all. Keeping your browser up-to-date is the best way to ensure a safe browsing experience with experimental features.

Q: Will Safari Experimental Features impact my browsing experience?

Safari experimental features are designed to improve your browsing experience. However, some of these features affect resource consumption, and this may slow down your browsing speed. It’s important to check for any significant performance issues and share feedback with Apple.

Q: How often are Safari Experimental Features updated?

Safari experimental features are developed independently of the standard Safari updates. Apple updates these functionalities with new releases of Safari, which usually happens once or twice a year.

In conclusion, Safari experimental features mark Apple’s initiative to move the browsing industry forward. These features provide users with an opportunity to experience cutting-edge functionality and contribute to the development of future browsing. Safari offers a beautiful and intuitive user interface, reinforced by speed, privacy, and Security, making it the best platform for experimentation. Try out some of the experimental features today and help shape the future of browsing!

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How to Enable Safari Experimental Features in iOS 11

iOS 11 beta 2 has come with several bug fixes and improvements along with some new add-ons like Safari “Experimental Features” which have been primarily designed for developers. They allow developers to debug web experiences within their apps. If you are an aspiring developer or a pro who wish to have a look at those new add-ons, you can easily enable Safari experimental features on your iOS 11 devices to carry out your web development task a bit more smoothly.

This new feature just goes on to show how serious Apple is now about developers. I’m not sure whether these features will be retained in the official version of iOS 11, which is set to be launched this fall. However, I do suspect these host of features may not go past betas. Anyway, you want to have a go at these crucial newbies? Let’s dive ahead with the quick process!

How to Access Safari Experimental Features in iOS 11 Beta 2 on iPhone and iPad

Step #1. Launch Settings app on your iOS device → Scroll down and tap on Safari.

Open Settings and Tap on Safari in iOS 13 on iPhone

Step #2. Now, scroll down and tap on Advanced at the bottom.

Tap on Advanced in Safari Settings in iOS 11

Step #3. Next up, tap on Experimental Features.

Tap on Experimental Features in Safari Settings in iOS 11

Step #4. Finally, you have the access to all the features you are looking for.

Enable Safari Experimental Features in iOS 11

Currently, you can access nine features like Constant Properties, CSS Spring Animations, Link Preload, SubtleCrypto, Viewport Fit, Web Animations, WebGPU, display: contents, Remove Legacy WebRTC API, etc.

Turn on the switch next to the feature you want to enable and then go ahead with your task of debugging or troubleshooting the web experiences within your apps.

Signing Off

Safari has vastly improved in recent times. Chrome no longer enjoys many advantages over it—at least on macOS and iOS devices. Besides, the former is claimed to be more secure and consumes less battery than later. What’s your take on Safari? Share your views in the comments below.

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  • How to Enable Messages with iCloud on iOS 11

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safari iphone experimental features

iOS 17.4: All the Latest Features on Your iPhone Explained

A pple released  iOS 17.4  on March 5, more than a month after the tech giant released  iOS 17.3  to the general public. The latest major iOS update brings new features, including major changes for people in the European Union  and  new emoji , as well as important bug fixes to your iPhone. 

Read more: You Should Download iOS 17.4.1 Right Now

To download the update, go to  Settings  >  General  >  Software Update , tap  Install Now  and follow the onscreen prompts. 

Here's what iOS 17.4 brings to your iPhone.

Downloading other app stores in the EU

Apple introduced a significant change to Safari, the App Store and iOS with iOS 17.4, but only for people in Europe. With iOS 17.4, people in the EU can download an alternative app store and apps from outside the App Store. As CNET's Katie Collins reports , this marks one of the largest changes to the App Store since its inception in 2008. People in the EU will also be given new default app controls, giving them more ways to customize their iPhone experience. 

Apple made these changes , which were announced in January, to comply with the EU's Digital Markets Act.

Read more: Apple Will Allow Installation of Rival App Stores On iPhones In Europe

More options for in-app payments

Apple introduced more ways to make in-app payments with iOS 17.4. If you go to Settings > Privacy & Security , you'll see an option called Contactless & NFC , or near-field communication . If you tap the new option, you'll be taken to a mostly blank page that has a small disclaimer that says the page will show apps that have requested the ability to use contactless and NFC payments in the future. Apple announced these options alongside the changes for people in the EU, and there's no word on whether this will be used by apps outside that region.

At least 100 new emoji

Apple introduced over 100 new emoji to iPhone users with iOS 17.4. Those emoji include heads shaking up and down or left and right, a phoenix and a slice of lime. These emoji were announced in 2023, and some Android devices, including the latest Samsung phones , already have them.

Improved iMessage security against future threats

With iOS 17.4, your iMessage chats get a security boost to protect them from cyberattacks that involve quantum computing. According to CNET's David Lumb , Apple said it hasn't seen these kinds of cyberattacks yet, but the company wants to get ahead of the potential threat now. 

Read more:   Apple's Next iOS Update Protects iMessage Against Future Quantum Computing Attacks

Podcasts can now show transcripts

In iOS 17.4, you can read the transcripts of your favorite podcasts as you listen to them. To see the transcripts, go into the Podcasts app and start listening to a show, then tap the media player across the bottom of your screen. There's a new button in the bottom left corner of your screen that looks like a speech bubble with quotes inside it. Tap this button and you'll see the transcript of the show you're listening to.

You can search within the transcript, too, so if someone mentions a book or movie title and you only remember part of it, you can search the part you do know and find the whole title. 

Read more:   What to Know About Podcast Transcripts on iOS 17.4

Virtual card numbers come to Apple Cash

Your Apple Cash  gets an upgrade with iOS 17.4, too. Now you can view  virtual card numbers for your Apple Cash which lets you shop at online stores that don't accept Apple Pay. This card comes with its own number, expiration date and three-digit security code, like a physical card. You can also easily request a new card number if you think your card has been compromised.

Read more: How to View Your Apple Cash's Virtual Card Numbers

Another digital clock widget

In iOS 17.4, Apple introduced a new digital clock app widget called City Digital. This widget displays the time as well as a set location as opposed to wherever your iPhone is at the moment. This can be helpful if you're traveling or live far from family and friends but want to keep in touch without waking them up in the middle of the night.

Apple introduced the digital clock widget to iPhones with the release of iOS 17.2 .

More Stolen Device Protection options

Apple introduced a few new options in  Stolen Device Protection  with iOS 17.4. The new options let you choose whether you want to always require a 1-hour security delay to access certain settings or make changes, or to only require the delay when you're away from a familiar location like your home. 

Apple introduced Stolen Device Protection with iOS 17.3, and the intent of the feature is to protect some of your data if your device is stolen or falls into nefarious hands. The feature doesn't protect all your data, but Apple still recommends everyone turn it on.

Read more: How to Give Your iPhone's Stolen Device Protection a Boost

New Battery Health readout for iPhone 15 models

With iOS 17.4,  iPhone 15 models  get a new  Battery Health  readout. If you go to  Settings > Battery, you'll see a new option that tells you the status of your battery's health in a word, like Normal or Service. You can also tap this option for more details about your battery, like its cycle count and maximum capacity. Before, your iPhone would show a percentage correlating to your battery's health without any indication of what it means.

Read more:   iOS 17.4's New Tool Shows if Your iPhone 15's Battery Health Is Normal

New Home button in the Music and Books apps

Apple introduced a Home button in Apple Music and the Books app with iOS 17.4. If you open either app and look at the bottom of your screen, the Home button is in the far-left corner. This button replaced Listen Now in Apple Music and Read Now in Books. 

If you're an Apple Music subscriber and tap the button, you're taken to a page that shows you menus, like Recently Played, and recommendations based on artists you've listened to. If you tap this button in the Books app, you see menus like Current Bestsellers and Start Reading for Free.

Previous iOS updates brought Home buttons to the Podcasts and Apple TV apps, so this change is likely Apple trying to apply some uniformity across its apps.

Siri can read messages in multiple languages

In iOS 17.4, Apple gave Siri the ability to read messages in multiple languages . Once enabled, Siri can read messages in languages like Spanish, dialects of Mandarin and Thai. Apple writes that this won't change the primary language Siri listens and responds in. 

Read more: How to Enable Siri to Read Messages in More Languages

New Apple CarPlay and Maps experience in certain vehicles

With iOS 17.4, if you use Apple CarPlay with Maps in certain supported vehicles, you'll see a new instrument cluster. 

"With supported CarPlay vehicles, Apple Maps will present a new instrument cluster experience with information about upcoming maneuvers," Apple wrote online . "Users will be able to swap the desired display type between the main and instrument cluster screen by tapping the map configuration button on the upper right of the Maps main screen."

Apple didn't say which vehicles support this new feature, and the company didn't respond to a request for comment.

Here are the full release notes for iOS 17.4.

Emoji New mushroom, phoenix, lime, broken chain, and shaking heads emoji are now available in the emoji keyboard. 18 people and body emoji add the option to face them in either direction. Apple Podcasts Transcripts let you follow an episode with text that highlights in sync with the audio in English, Spanish, French and German. Episode text can be read in full, searched for a word or phrase, tapped to play from a specific point and used with accessibility features such as Text Size, Increase Contrast and VoiceOver. This update includes the following enhancements and bug fixes: Music recognition lets you add songs you have identified to your Apple Music Playlists and Library, as well as Apple Music Classic. Siri has a new option to announce messages you receive in any supported language. Stolen Device Protection supports the option for increased security in all locations. Battery Health in Settings shows battery cycle count, manufacture date, and first use on iPhone 15 and iPhone 15 Pro models. Call Identification displays Apple-verified business name, logo and department name when available. Business updates in Messages for Business provide trusted information for order status, flight notifications, fraud alerts or other transactions you opt into. Apple Cash virtual card numbers enable you to pay with Apple Cash at merchants that don't yet accept Apple Pay by typing in your number from Wallet or using Safari AutoFill. Fixes an issue where contact pictures are blank in Find My. Fixes an issue for Dual SIM users where the phone number changes from primary to secondary and is visible to a group they have messaged. Some features may not be available for all regions or on all Apple devices. For information on the security content of Apple software updates, please visit this website: https://support.apple.com/kb/HT201222

For more on iOS 17, here's what to know about iOS 17.4.1 and all the features that were included in iOS 17.3 . You can also check out our iOS 17 cheat sheet .

iOS 17.4: All the Latest Features on Your iPhone Explained

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Rysz

What are "Experimental Features" in Safari?

Safari settings on iOS 11 have an Advanced screen full of "Experimental Features." I searched, but did not find any explanation of what each one of them does. For many, it is not even clear to me if turning one of them ON enables, or disables, that particular feature.

Is there a guide, or KB article, somewhere explaining them?

User uploaded file

iPad Pro 10.5-inch, Wi-Fi, iOS 11

Posted on Oct 24, 2017 12:46 PM

IdrisSeabright

Posted on Jan 3, 2018 10:45 AM

Sharky44. wrote: There must be a explanation of what these features contain and do , I would think Apple would know but I see no comment from them here

This is a user-to-user forum. Apple's participation here is minimal. Did you look at the links already posted?

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Jan 3, 2018 10:45 AM in response to Sharky44.

Oct 25, 2017 2:30 PM in response to Rysz

Bump! Anyone?

seventy one

Nov 27, 2017 3:18 AM in response to Rysz

Don't know if this goes as far as you need Rysz,

https://developer.apple.com/safari/technology-preview/release-notes/

scsb

Nov 27, 2017 3:07 AM in response to Rysz

Maybe this will help: Explain iOS 11 Safari Experimental Features and How to Use It

Sharky44.

Jan 3, 2018 10:42 AM in response to Rysz

There must be a explanation of what these features contain and do , I would think Apple would know but I see no comment from them here , which I thought I’d might , must go back to google.

Jan 3, 2018 2:37 PM in response to IdrisSeabright

Yes , thanks.

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How apple’s embrace of gemini ai could transform the iphone and google.

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Is generative AI about to land on the iPhone, courtesy of Google's Gemini?

Reports earlier this week that Apple was working with Google to introduce AI features to the iPhone caused a stir. The first revelations came from Bloomberg’s Mark Gurman, and they were a surprise to everybody.

After all, Google and Apple are rivals, so when Gurman revealed that the two companies were in talks to put Google’s AI model, called Gemini, into the iPhone, it meant that the two companies could be working very closely together.

Apple has long had a policy of “don’t do it first, do it right,” so it’s no surprise that it’s later to the AI game on phones than Google, Samsung or Qualcomm, for instance. Reports had already suggested that this year’s Worldwide Developers Conference would show off Apple’s own AI developments, which are believed to be mainly on-device improvements—that is, they don’t need access to the internet to work.

But Google’s involvement could widen the range of AI features, though the greater power would be the enhanced processing power that comes from using Google’s remote servers in addition to Apple’s capable iPhone silicon.

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When you have AI in the mix, things move fast, so being late to this party may have made Apple conclude it needed outside help.

Choosing Google makes sense—the companies already work together on search, with Google paying, as Bloomberg put it, “billions of dollars annually to make its search engine the default option in the Safari web browser on the iPhone and other devices.”

And, as the New York Times pointed out, the two companies have been involved together for decades, and Apple is racing “to embrace a technology that has upended the tech industry.” Prior to Android, the mapping app that came as a default app on the iPhone was Google Maps, for instance.

Google's AI Gemini could be on your iPhone soon.

While there are few details about the agreement, there are clear gains for both parties. Google would have a presence on billions iPhones like never before, and if the deal comes to fruition, it would be a real boon for Google. As the New York Times said, “Virtually overnight, Google could have more consumers using its AI than its chief rival, OpenAI, which makes ChatGPT — making a pact with Apple a tantalizing prospect.”

Things may not go that way, though, as Apple has apparently also been in talks with the other big AI model, Open AI’s ChatGPT.

Earlier this year, Samsung announced what it calls Galaxy AI, providing practical features on its latest phones, such as a live translation capability so you can conduct a phone call in multiple languages, which is reassuring if you’re booking a ticket, a table or a hotel room in a country where you don’t speak the language. This feature is handled on-device on the Samsung Galaxy S24, for example.

And while AI has been on the menu for a long time, it really feels that this is the year it will become much more mainstream. Apple may have needed to cozy up with Google to ensure it didn’t get left out of the generative AI party as it takes off.

David Phelan

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iPhone Features You Can’t Use If You’re Not in the EU

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  • To comply with the EU's DMA, Apple made notable changes to its App Store policies and unveiled exclusive iPhone features for European users.
  • iPhone users in the EU can download apps from third-party app stores and websites, uninstall Safari, and pay using third-party wallets or banking apps.
  • App developers in the EU can request additional interoperability with iPhone hardware and software features.

1. Access to Third-party App Stores

App Store Logo

Any app developer has the freedom to create an app marketplace for iPhone users. Also, they can use third-party payment mechanisms for purchases. All they have to make sure that they meet Apple’s criteria for customer support, customer experience, fraud prevention, and more. McPaw’s Setapp has already launched its alternative app store on the iPhone in the EU. Of course, Apple won’t offer the much-opposed sideloading feature for free. To make sure it still makes money,  Apple will charge a commission  of 50 euro cents per install to the app developers. This will be applicable once the app reaches 1 million downloads annually in the EU.

2. Option to Uninstall Safari and Switch to a Third-party Browser

Safari 15 Bug on macOS, iOS, and iPadOS Can Leak Your Browsing History, Google Account Info

What’s more? By fall 2025, Apple will also offer more “user-friendly ways” to transfer data from an iPhone to a non-Apple device. When this happens, Google and Samsung can come up with better data transfer tools so a user to easily switch from an iPhone to an Android smartphone.

3. Download Apps Directly from Websites

4. pay using third-party banking or wallet apps.

Third party payment option Apple

Apple also made some significant changes to its contactless payments policy as a part of the DMA-compliant. Developers can now offer their own tap-to-pay solutions from within their banking or wallet apps while maintaining user security and privacy. Now, it means iPhone users in the EU can initiate NFC payments directly from a third-party banking app or wallet app, without the need for Apple Pay or the Wallet app.

5. Interoperability Requests Form for Developers

Those were the 5 new exclusive iPhone features that only EU users will enjoy. At the moment, no other country, not even the US has access to these features.

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Kanika Gogia

Kanika has been a loyal iPhone user since 2014 and loves everything Apple. With a Master’s in Computer Applications, passion for technology, and over five years of experience in writing, she landed at Beebom as an Apple Ecosystem Writer. She specializes in writing How To’s, troubleshooting guides, App features, and roundups for Apple users to help them make the best use of their gadgets. When not writing, she loves to try out new recipes and enjoy some family time.

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    Look at the bottom of the same window and you should see the Show Develop menu in menu bar checkbox. Checkmark the checkbox to get the Develop menu on the Mac toolbar for the Safari app. Close the Safari Advanced Preferences window. Go to the Mac toolbar and click Develop. How to access Experimental Features on macOS.

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    Scroll down and tap on "Safari" to access Safari settings. 3. Within the Safari settings, scroll further down and tap on "Advanced.". 4. In the Advanced settings, look for "Experimental ...

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    Enable iOS 12/11 Safari Experimental Features on iPhone/iPad. Launch Settings. Scroll down to find Safari, and tap it. Scroll down to click the Advance option. Then you will see the Experimental Features > Tap it. Toggle on the Safari Experimental WebKit Features you want. Enable iOS 12/11 Safari Experimental Features.

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    Step 1: Open Setting app on your iPhone. Step 2: Scroll down until you find Safari and tap on it. Step 3: Scroll all the way down on Safari Setting on your iPhone, to find the Advanced option and tap on it. Step 4: Tap on Feature Flags option available on botton of Advanced menu of Safari settings.

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    Support for the lock() and unlock() methods remain experimental features for the time being. If you'd like to try them out, you can enable them in the Settings app on iOS and iPadOS 16.4 via Safari → Advanced → Experimental Features → Screen Orientation API (Locking / Unlocking). Screen Wake Lock API

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    Now, here are 30 tricks to help you have a better experience when using Safari. 1. Navigate Tab Bar. (Credit: Lance Whitney / Apple) The jump to iOS 15 moved Safari's address bar to the bottom of ...

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    To use experimental features, you should first enable "Develop" menu. Open Safari and go to "Safari > Settings…" menu. Go to "Advanced" section and enable "Show Develop menu in menu bar" option. Now, you will see "Developer" and "Feature Flags" tabs are added in Safari settings.

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    WebCore's features.json file has more information about at least some of the WebKit's features, 'experimental' and standard alike. The entries in that file often indicate if the feature is 'coming' or 'going', and in many cases link to the relevant standard document or web site.

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    Experimental WebKit Features. Hi when delving into my iPhone settings I came across Experimental WebKit Features and noticed some of the features were switched on whilst others were not. I am not familiar with the terms or settings on this list and thus began to switch multiple settings to the odd position. Unfortunately I did not take note of ...

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    In most cases, "regular" users do not have to tamper with experimental features to configure Safari for better privacy. Lockdown mode. The launch of iOS 16 saw the introduction of Lockdown Mode for the entire device on which it is enabled. Per Apple, "when Phone is in Lockdown Mode… apps, websites, and features will be strictly limited ...

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    Many people use Safari as their go-to web browser. Safari has been known for its fast and efficient performance since its inception. Meanwhile, the browser has consistently provided a conducive atmosphere for experimentation with new features. In this article, we'll focus on the experimental features of Safari, what they offer, and how you can help

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    Launch Settings app on your iOS device → Scroll down and tap on Safari. Step #2. Now, scroll down and tap on Advanced at the bottom. Step #3. Next up, tap on Experimental Features. Step #4. Finally, you have the access to all the features you are looking for. Currently, you can access nine features like Constant Properties, CSS Spring ...

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    Here's what iOS 17.4 brings to your iPhone. Downloading other app stores in the EU. Apple introduced a significant change to Safari, the App Store and iOS with iOS 17.4, but only for people in Europe.

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    Safari settings on iOS 11 have an Advanced screen full of "Experimental Features." I searched, but did not find any explanation of what each one of them does. For many, it is not even clear to me if turning one of them ON enables, or disables, that particular feature. Is there a guide, or KB article, somewhere explaining them?

  24. How Apple's Embrace Of Gemini AI Could Transform The iPhone ...

    Google's AI Gemini could be on your iPhone soon. SOPA Images/LightRocket via Getty Images. While there are few details about the agreement, there are clear gains for both parties.

  25. iPhone Features You Can't Use If You're Not in the EU

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