Official Twitter account for the WebKit Open Source Project — the web browser engine that powers Safari and other apps on macOS, iOS, Windows, and Linux.
- Tweets 747
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- Followers 35,777
- Likes 52
CSS is complicated. Web Inspector’s new Visual Styles sidebar can help you perfect a design — now in the nightly.
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WebKit is now 100% ES6 complete according to @kangax’s handy table. 💯 kangax.github.io/compat-tabl…
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iOS and iPadOS 16.4 beta 1 is now available with:
• Web Push for Home Screen web apps
• Focus support for Web Push
• Badging API
• Manifest ID
• Third-party browser support for Add to Home Screen
And more: webkit.org/blog/13878/web-pu…
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Learn about the new bytecode format in JavaScriptCore that uses 50% less memory, which is a 10% overall memory usage savings on JavaScript-heavy websites. webkit.org/blog/9329/a-new-b…
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Safari 17.2 is here!
With 39 features and 169 fixes, today’s release is Safari’s biggest December release of web technology ever.
webkit.org/blog/14787/webkit…
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Battery life is critical. Here are some general principles for web developers to create energy-efficient web content. You can help us make the web more powerful by using less power. webkit.org/blog/8970/how-web…
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Safari 18.0 is here!! Lots of new web technology, including CSS View Transitions, Style Queries, immersive WebXR, plus updates for Web Apps, JavaScript, Web API, Media, Web Inspector, Passkeys and more — 53 features, 25 deprecations & 209 resolved issues.
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Today we’re excited to announce Speedometer 3 in collaboration with @googlechrome, @Firefox, & @MicrosoftEdge. This benchmark measures speed & guides browser teams as they make websites & web apps run faster than ever — now with a new generation of tests. webkit.org/blog/15131/speedo…
ALT Complex DOM workloads has ribbon menus, side bar tree view, search field, and other complex UI elements surrounding the todo app.
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In addition to having 100% ES6 support — WebKit now supports the ECMAScript Internationalization API spec. 🇺🇸🇬🇧🇩🇪🇯🇵
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Today Apple, Bocoup, Google, Igalia, Microsoft, & Mozilla are announcing Interop 2022, a collaboration to improve interoperability of specific web technologies. Progress is scored from the automated testing of 15 focus areas, plus 3 investigation projects. webkit.org/blog/12288/workin…
ALT screenshot of the dashboard at https://wpt.fyi/interop-2022
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Check out the experimental implementation of the new WebGPU API, for high-performance 3D graphics and data-parallel computation on the web. You can try a live demo in Safari Technology Preview 91. webkit.org/blog/9528/webgpu-…
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Safari 16.4 is now available with 135 new features + 280 bug fixes, including Web Push on iOS & iPadOS, Web Apps, Web Components, CSS, HTML, JavaScript, WebAssembly, Web API, Media, WKWebView, Developer Tooling, Web Inspector, Web Extensions, and more: webkit.org/blog/13966/webkit…
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WebKit for Safari 17.4 is here! With 46 features and 146 bug fixes, it includes:
• menu commands for web apps on Mac
• switch control
• vertical forms
• align-content everywhere!
• CSS Scoping
• WebM & Vorbis on iOS, iPadOS and visionOS
and more!
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We’ve been hard at work making Safari faster and faster — improving our Speedometer 3.0 score by ~60% between Safari 17.0 and Safari 17.4.
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The WebKit project transitioned to Git hosted on GitHub in June this year, making it easier for contributors and web developers to interact with the project.
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Release notes for today’s Safari Technology Preview release 46 update are now available. webkit.org/blog/8042/release…
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Safari Technology Preview 192 is available with updates to Authentication, CSS, Editing, JavaScript, Media, Rendering, Web API, Web Extensions, and Web Inspector.
webkit.org/blog/15260/releas…
ALT Safari Technology Preview app icon on macOS Sonoma featuring a red and white compass needle over a purple background with white radial marks.
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News from WWDC24: WebKit in Safari 18 beta
• Web XR
• View Transitions
• Style Queries
• Animating display
• Web app improvements on Mac
• Spatial photos & panoramas on visionOS
• Safari Viewer
• Passkey improvements
• 174 bug fixes
+ much more
webkit.org/blog/15443/news-f…
News from WWDC24: WebKit in Safari 18 beta
The last year has been a great one for WebKit.
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Meet Face ID and Touch ID for the web to learn how to adopt these technologies with detailed examples, guidance on managing different browser UI, propagating user gestures to WebAuthn calls, and working with Apple Anonymous Attestation. webkit.org/blog/11312/meet-f…
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Overwhelmed by too many CSS variables? Web Inspector in Safari Technology Preview has a few features to reduce the clutter and keep you focused and productive. webkit.org/blog/12303/css-va…
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Announcing a new benchmark for modern web app responsiveness: Speedometer 2.0
webkit.org/blog/8063/speedom…
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Web Inspector Tip: using queryHolders(target) in the Console will return an array of all other objects that have a reference to target. webkit.org/web-inspector/con…
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Introducing the Web High Level Shading Language, allowing for next-generation graphics with the WebGPU API! webkit.org/blog/8482/web-hig…
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Safari Technology Preview — a new way to try features and fixes that are coming to Safari. webkit.org/blog/6017/introdu…
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Learn how to use the Layers Tab in the Web Inspector reference documentation. You can use it to find out if your CSS is using more memory than it should and troubleshoot rendering performance issues. webkit.org/web-inspector/lay…
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Safari 17.5 is out today! With:
• text-wrap: balance and text-wrap: stable
• light-dark()
• @starting-style
• @import <url> supports(<feature>);
• AV1 for WebCodecs
• WebGL EXT_conservative_depth and NV_shader_noperspective_interpolation
and more!
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The OS X 10.11.4 and iOS 9.3 betas out today contain picture element, CSS variables, font-feature-settings and more! developer.apple.com/library/…
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With over 70 additions to WebKit, Safari 15.4 is packed with new web technologies, updates and fixes. webkit.org/blog/12445/new-we…
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Safari on iOS 11 and macOS High Sierra adds WebRTC, WebAssembly, Variable Fonts, Timing APIs and so much more. webkit.org/blog/7956/new-web…
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Get details on the improvements in Intelligent Tracking Prevention 2.0 available in the betas for Safari 12 on macOS Mojave and Safari on iOS 12. webkit.org/blog/8311/intelli…
ALT Example of the Storage Access API prompt in Safari
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New WebKit features shipped with Safari 11.1 on macOS and Safari on iOS 11.3: Service Workers, Payment Request, Beacon API, Directory Upload, Clipboard improvements, videos as images, font-display, Passive Event Listeners, Offscreen Canvas and more! webkit.org/blog/8216/new-web…
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Meet JavaScript's new sidekick, WebAssembly, now in Safari 11 on macOS, and Safari on iOS 11. webkit.org/blog/7691/webasse…
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Pssst! Can you keep a secret? Cool new Apple products are coming and WebKit needs your help to take full advantage of the [redacted]. The WebKit Platform Integration team is waiting to hear from you! jobs.apple.com/us/search?&op…
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Web Inspector Tip: You can use console.screenshot([target]) to capture a screenshot of the given target (e.g. a Node) or the viewport. webkit.org/web-inspector/con…
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Jump into the technical deep end of JavaScriptCore’s Garbage Collection algorithm in the “Understanding GC in JSC From Scratch” post on the WebKit blog. webkit.org/blog/12967/unders…
ALT Preview image of the eden/full GC marking phase.
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See the new web features in iOS 10.3 and Safari 10.1 on macOS! Fetch, CSS Grid, ES2016/2017, and more… webkit.org/blog/7477/new-web…
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Adobe has announced it will stop distributing and updating Flash Player at the end of 2020. webkit.org/blog/7839/adobe-a…
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Safari Technology Preview 185 is available with updates to Accessibility, CSS, Media, Rendering, Web API, Web Inspector, WebAuthn, and WebGPU.
webkit.org/blog/14885/releas…
ALT Safari Technology Preview app icon on macOS Sonoma featuring a red and white compass needle over a purple background with white radial marks.
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Safari 16.0 is now available for iOS 16, macOS Monterey and macOS Big Sur. It includes Container Queries, Subgrid, Web Inspector Extensions, Passkeys, AVIF, accessible `display: contents`, Motion Path, Overscroll Behavior, Shared Workers, and much more.
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Web Inspector in the nightly has a cubic-bezier editor for CSS’s animation-timing-function. trac.webkit.org/changeset/18…
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iOS 9.3 and OS X 10.11.4 are available today with new WebKit features. CSS Vars, Fast Tap, Font Features, and more! developer.apple.com/library/…
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Experimental support for the Web Animations API to create, query, and control webpage animations is available in Safari Technology Preview 59! You can learn more about the API on the WebKit blog. webkit.org/blog/8343/web-ani…
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Announcing the WebKit Tracking Prevention Policy — a policy adopted by the WebKit project for new code contributions and our web standards work. It details the tracking we aim to prevent in our ongoing efforts to protect user privacy. webkit.org/blog/9507/announc…
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What Spectre and Meltdown Mean For WebKit
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Release notes for Safari Technology Preview 114 are available with updates to Web Inspector, JavaScript, Date and Time inputs, Web Audio, MediaRecorder, Paint Timing, WebGL2, and more. webkit.org/blog/11300/releas…
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We are proud to launch Interop 2023 with Bocoup, Google, Igalia, Microsoft & Mozilla in a continuing commitment the interoperability of the web.
This year involves 26 Focus Areas + 2 Investigations.
Read the full details on the technologies included: webkit.org/blog/13706/intero…
ALT screenshot of the Interop 2023 dashboard. Starting scores: Chrome 86, Firefox 74, Safari Technology Preview 86. Plus the full list of technologies, a graph of results, and more. Find it all at http://wpt.fyi/interop-2023
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We invented Private Browsing almost twenty years ago. Other browsers followed. Now we’ve revamped it to defend against modern privacy threats, blazing the trail yet again. Here’s Private Browsing 2.0.
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We’re excited to work with @googlechrome and @firefox on the next Speedometer benchmark, which measures real-world browser performance on the Web. Working together will help us further improve the benchmark and improve browser performance for our users.
github.com/WebKit/Speedomete…
ALT "speedometer" logo white lettering, "dom" letters in red, and a stylized tachometer inside the "o".
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Release notes for Safari Technology Preview 142 are available with updates to Web Inspector, CSS with Subgrid and CSS Container Queries, Web Animations, JavaScript, Shared Workers, the experimental model element, form improvements, and more. webkit.org/blog/12522/releas…
ALT Safari Technology Preview app icon
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WebKit Features in Safari 16 Beta — Web Inspector Extensions, Container Queries, Web Push for macOS Ventura, Subgrid, Flexbox Inspector, Accessibility Improvements, Offset Path, Animatable Grids, Overscroll Behavior, Shared Worker, and much more.
#WWDC22
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Automate testing your web content in Safari with WebDriver tests. webkit.org/blog/6900/webdriv…
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CSS Backdrop Filters — a capability that web designers have been demanding for some time. webkit.org/blog/3632/introdu…
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With Safari Technology Preview 117 you can now use the new translate, rotate, and scale CSS properties to specify individually what was previously only available as transform functions. Learn more on the WebKit blog. webkit.org/blog/11420/css-in…
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Introducing Riptide, WebKit's concurrent garbage collector with a 5× improvement on splay-latency. webkit.org/blog/7122/introdu…
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Help the @CSSWG choose the syntax for CSS Nesting. This article will walk you through the three options currently under consideration. Read through them, and take a one question survey to weigh in.
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Ten years ago today we introduced the first version of Web Inspector to the world. webkit.org/blog/5718/10-year…
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15 years ago today, WebKit was officially born as an open-source project. webkit.org/blog/6888/celebra…
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The @WebKit JavaScriptCore team thinks through what it would take to extend concurrency to the entire JS heap. webkit.org/blog/7846/concurr…
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New @WebKit features in Safari 10.1 with the macOS 10.12.4 & iOS 10.3 betas: CSS Grid, Fetch, and so much more. developer.apple.com/library/…
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Learn about how to support Dark Mode in your webpages with Dark Mode Support in WebKit. webkit.org/blog/8840/dark-mo…
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Try out CSS Nesting today in Safari Technology Preview. Here’s how it works.
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New Web Inspector timelines to manage memory spikes and explore the JavaScript heap. webkit.org/blog/6425/memory-…
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WebKit in Safari 10 fully supports the ECMA-402 API for internationalization in JavaScript. 🇺🇸🇬🇧🇩🇪🇯🇵 webkit.org/blog/6978/javascr…
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Faster web font downloads and better font load policies with developer control in WebKit. webkit.org/blog/6643/improve…
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WebKit brings web pages and rich formatted HTML content in Mail and Messages to watchOS 5. Learn about how our team maintained compatibility with existing web content and how web developers can optimize for web content on Apple Watch. developer.apple.com/videos/p…
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🎂Celebrating 20 years. Thanks to everyone who has contributed! donmelton.com/2021/06/25/hap…
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WebKit is ES6 100%, but there's more to the story. Read how the JSC team kept high-performance for new ES6 features. webkit.org/blog/6756/es6-fea…
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Web Inspector’s Visual Styles sidebar — a new way for designers and developers to edit CSS. webkit.org/blog/5663/editing…
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Learn about the new WebKit features available with the release of Safari 14.1 on macOS Big Sur, iPadOS 14.5, and iOS 14.5. It includes Flexbox gap support, date & time inputs on macOS, Paint Timing, Web Audio, MediaRecorder, WebM, WASM Threads, and more. webkit.org/blog/11648/new-we…
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Introducing JetStream 2, a JavaScript and WebAssembly benchmark suite focused on advanced web applications. Read more details in the blog post. webkit.org/blog/8685/introdu…
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Learn about the all new CPU Timeline in Web Inspector in Safari 13 and Safari Technology Preview that helps web developers measure the CPU usage of a page, estimate the energy impact, and easily identify where code can be improved to save power. webkit.org/blog/8993/cpu-tim…
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Here are the release notes for today’s Safari Technology Preview release 32 update with WebRTC and WebAssembly! webkit.org/blog/7627/safari-…
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Release notes are now available for Safari Technology Preview 99, which removes support for Adobe Flash, adds new Web Inspector features, and a lot more. webkit.org/blog/9992/release…
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Variable Fonts: all of the styles, less of the download weight. Try it in Safari Technology Preview release 16!
webkit.org/blog/7051/variabl…
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Safari 16.1 is now available with Web Push for macOS Ventura, animated AVIF, passkeys in more places, new viewport sizes on iPadOS, hover with Apple Pencil, scroll to text fragments, screen capture improvements, and more — plus lots of fixes and polish.
webkit.org/blog/13399/webkit…
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Safari Technology Preview 202 is now available with updates to Accessibility, CSS, Editing, JavaScript, Media, Rendering, SVG, Web Animations, Web API, Web Assembly, and WebDriver.
webkit.org/blog/15798/releas…
ALT Safari Technology Preview app icon on macOS Sequoia featuring a red and white compass needle over a purple background with white radial marks.
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Take a look at all of the new WebKit features that shipped with Safari 13.1: pointer/mouse events on iPadOS, Web Animations API, Async Clipboard API, ResizeObserver, CSS Shadow Parts, Web Inspector improvements, and more! webkit.org/blog/10247/new-we…
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Explore compositing layers in 3D with the experimental Layers tab in Web Inspector. webkit.org/blog/8262/visuali…
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The Payment Request API for Apple Pay has arrived in Safari 11.1 on macOS High Sierra and Safari on iOS 11.3. Learn how to use it on your site and demo (fake-)buying a “Genuine Squirrelfish” (Squirrelfish not included). webkit.org/blog/8182/introdu…
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Safari 10 will not use legacy plug-ins like Adobe Flash without direct user action. webkit.org/blog/6589/next-st…
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The "Speculation in JavaScriptCore" blog post/textbook gives you more than you ever wanted to know about how JavaScriptCore executes your code. webkit.org/blog/10308/specul…
ALT Speculation in JavaScriptCore This post is all about speculative compilation, or just speculation for short, in the context of the JavaScriptCore virtual machine. Read more…
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Release notes for Safari Technology Preview 140 are available with updates to Web Inspector, :has() pseudo-class, CSS, Dialog Element, Web API, Web Animations, Media, and more. webkit.org/blog/12255/releas…
ALT Safari Technology Preview app icon
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Take a tour of the new WebKit features that shipped with Safari 12.1 in macOS Mojave 10.14.4 and iOS 12.2 including: Dark Mode for the web, Web Share API, Intersection Observer, WebRTC Improvements, Inspector enhancements, and more! webkit.org/blog/8718/new-web…
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The wait is over. After months in betas and Safari Technology Preview, today’s releases take another important step to a better web. Learn about the latest updates to Safari’s Intelligent Tracking Prevention: full third-party cookie blocking and more. webkit.org/blog/10218/full-t…
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Learn techniques to ensure your content looks its best with dark mode in Safari, Mail, or your WebKit-based apps on iOS 13 and macOS Catalina. webkit.org/blog/8840/dark-mo…
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The MediaRecorder API is available in Safari Technology Preview and Safari for iOS 14.3 beta, along with getUserMedia now available in WKWebView! Try it out and report any bugs you encounter.
Read about it on the WebKit blog to learn more. webkit.org/blog/11353/mediar…
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Safari 16.3 is available today!
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Introducing MotionMark: a web benchmark that focuses on graphics performance. webkit.org/blog/6943/motionm…
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Interop 2023 was a great success. Now we are doing it again for 2024.
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The Apple @webkit team is hiring a Web Developer Tools Engineer! Take a look. jobs.apple.com/en-us/details…
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What’s New in Safari 10 for web developers. developer.apple.com/library/…
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Read up on the new fast-tap behavior in WebKit on iOS, and get your web content ready. webkit.org/blog/5610/more-re…
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The @igalia team shares an introductory look CSS Grid Layout in WebKit. webkit.org/blog/7434/css-gri…
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Release notes are now available for Safari Technology Preview release 71 including Dark Mode enhancements, Web Animations, Intersection Observer, new experimental features for Web Authentication, and an experimental Audits tab in Web Inspector. webkit.org/blog/8517/release…
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Web Inspector includes a new tool to help locate and resolve rendering performance issues. webkit.org/blog/3996/introdu…
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Support for CSS Font Features is available in the iOS 9.3 and OS X 10.11.4 betas. webkit.org/blog/5735/css-fon…
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Web Inspector has two great new tools for JavaScript: the Code Coverage and Type profilers. webkit.org/blog/3846
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