Recent Articles

  • CSS Grid Level 2 – subgrid is coming to Firefox

    The subgrid feature which is part of Level 2 of the CSS Grid Specification is not yet shipping in any browser, but is now available for testing in Firefox Nightly. This is a feature that, if you have used CSS Grid for a layout of any complexity, you are likely to be pretty excited about

  • Indicating focus to improve accessibility

    Focus indicators make the difference between day and night for people who rely on them. Focus is something that happens between the interactive elements on a page. In this post I will explain what we mean by focus, show you how focus outlines make your site easier to use for anyone who relies on the keyboard, and share examples of why it's a best practice to never remove them.

  • JavaScript and evidence-based language design

    In what ways can empirical evidence be used in the design of a language like JavaScript? At TC39, as stewards of the JavaScript specification, how do we answer questions about the design of JavaScript and help make it accessible to the thousands of new coders who join the industry each year? To answer this we need to experiment, and I need your help.

  • Nathan Egge

    Firefox brings you smooth video playback with the world’s fastest AV1 decoder

    With this week's release of Firefox 67, the new high performance royalty-free AV1 video decoder dav1d is now enabled by default on all desktop platforms (Windows, OSX and Linux) for both 32-bit and 64-bit systems. And work is in progress on rav1e, the Rust AV1 encoder.

  • Firefox 67: Dark Mode CSS, WebRender, and more

    Firefox 67 is now available in general release, bringing a faster and better JavaScript debugger, support for CSS prefers-color-scheme queries, and the initial debut of WebRender in stable Firefox. Dan Callahan walks through the highlights of browser, platform, and tooling features.

  • Faster smarter JavaScript debugging in Firefox DevTools

    Script debugging is one of the most powerful and complex productivity features in the web developer toolbox. Done right, it empowers developers to fix bugs quickly and efficiently. The DevTools Debugger team – with help from our tireless developer community – has just landed updates that significantly improve performance and reliability.

  • Empowering User Privacy and Decentralizing IoT with Mozilla WebThings

    In designing Mozilla WebThings, we have consciously insulated users from servers that could harvest their data, including our own Mozilla servers, by offering an interoperable, decentralized IoT solution. Learn about the user research that informs our project, and how we've engineered privacy by design into every aspect of Mozilla WebThings.

  • Mike Taylor

    TLS 1.0 and 1.1 Removal Update

    As you may have read last year, Safari, Firefox, Edge and Chrome browsers are removing support for TLS 1.0 and 1.1 in March of 2020. That means there’s less than a year to enable TLS 1.2 (and, ideally, 1.3) on your servers, otherwise all major browsers will display error pages, rather than the content your users came to see.

  • Eric Rescorla

    Technical Details on the Recent Firefox Add-on Outage

    Recently, Firefox had an incident in which most add-ons stopped working. This was due to an error on our end: we let one of the certificates used to sign add-ons expire which had the effect of disabling the vast majority of add-ons. Now that we’ve fixed the problem for most users and most people’s add-ons are restored, I wanted to walk through the details of what happened, why, and how we repaired it.

  • Owning it: browser compatibility data and open source governance

    What does it mean to “own” an open-source project? With the browser-compat-data project (“BCD”), the MDN (Mozilla Developer Network) community and I recently had the opportunity to find out.

  • Introducing Mozilla WebThings

    Project Things is graduating from its early experimental phase and from now on will be known as Mozilla WebThings. This platform for monitoring and controlling devices over the web consists of the WebThings Gateway, a software distribution for smart home gateways focused on privacy, security and interoperability, and the WebThings Framework, a collection of reusable software components that help developers build their own web-connected things.

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