Recent Articles

  • Building the DOM faster: speculative parsing, async, defer and preload

    In 2017, the toolbox for making sure your web page loads fast includes everything from minification and asset optimization to caching, CDNs, code splitting and tree shaking. Understanding what goes on inside a browser is still the most powerful tool for every web developer. This article breaks down how defer and async work and how you can leverage the new keyword preload.

  • Experimenting with WebAssembly and Computer Vision

    This past summer, four students at a coding bootcamp in Los Angeles began experimenting with WebAssembly. The result, after six weeks of exploration, was WebSight: a real-time face detection demo based on OpenCV.

  • Meta 2 AR Headset with Firefox

    One of the biggest challenges in developing immersive WebVR experiences today is that immersion takes you away from your developer tools. With Meta's new augmented reality headset, you can work on and experience WebVR content today without ever taking a headset on or off, or connecting developer tools to a remote device.

  • I built something with A-Frame in 2 days (and you can too)

    A few months ago, I had the opportunity to try out several WebVR experiences for the first time, and I was blown away by the possibilities. Using just a headset and my Firefox browser, I was able to play games, explore worlds, paint, create music and so much more. All through the open web. I […]

  • Life After Flash: Multimedia for the Open Web

    Part II: Flash delivered video, animation, interactive sites and, yes, ads to billions of users for more than a decade, but now it’s going away. Here's a compilation of resources that looks ahead at the open web technologies that have emerged to make web video, animation, and game development more performant and engaging than ever!

  • Flash, In Memoriam

    Part I of a two-part reflection on digital multimedia, yesterday and today: Macromedia launched Flash 1.0 in 1996 with the grand vision of a single multimedia platform that would work flawlessly in any browser or any computer. In its day, Flash triggered a wave of creativity and inspired millions of people around the world to create digital media for the web. At one time, 75% of all video content on the web was delivered via the Flash player.

  • Introducing the Extension Compatibility Tester

    With Firefox’s move to a modern web-style browser extension API, it’s now possible to maintain one codebase and ship an extension in multiple browsers. However, since different browsers can have different capabilities, some extensions may require modification to be truly portable. With this in mind, we’ve built the Extension Compatibility Tester.

  • Inside a super fast CSS engine: Quantum CSS (aka Stylo)

    Project Quantum is a major rewrite of Firefox’s internals to make Firefox fast. We’re swapping in parts from our experimental browser, Servo, and making massive improvements to other parts of the engine. The first major component from Servo—a new CSS engine called Quantum CSS (previously known as Stylo)—is now available for testing in our Nightly version. It brings together state-of-the-art innovations from four different browsers to create a new super CSS engine.

  • Essential WebVR resources

    With the release of the WebVR API v1.1, and WebVR support in Firefox 55, here's a collection of useful resources for WebVR development. From the landing page at to the A-Frame website and community, here's everything you need to get started.

  • A-Frame comes to js13kGames: build a game in WebVR

    Announcing a new twist to this year's js13kgames competition - the A-Frame category! We challenge you to build a WebVR game experience with A-Frame. For this category, you’ll have the same file size limit set to 13 kilobytes plus the A-Frame library for free. This year's theme: lost. Submissions close: September 13.

  • Firefox 55: first desktop browser to support WebVR

    Firefox on Windows is the first desktop browser to support the new WebVR standard (and macOS support is ready now in Nightly!) You'll find many new features for developers, as well as underlying platform changes that make Firefox and the Web faster and more secure.

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