Firefox Articles
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Scroll Anchoring in Firefox 66
Firefox 66 was released last week with a new feature called scroll anchoring, based on a new CSS specification. Scroll anchoring works to anchor the user to the content they’re looking at. As this content is moved by ads, screen rotations, screen resizes, or other causes, the page now scrolls to keep you at the same relative position to it. Learn how our intervention works.
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Firefox 66: The Sound of Silence
Firefox 66 is out, and brings with it a host of great new features like screen sharing, scroll anchoring, autoplay blocking for audible media, and initial support for the Touch Bar on macOS.
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Implications of Rewriting a Browser Component in Rust
There have been 69 security bugs in Firefox’s style component since the browser was first released in 2002. If we'd had a time machine and could have written this component in Rust from the start, 51 (73.9%) of these bugs would not have been possible. Rust isn't foolproof, but by removing the burden of memory safety, Rust lets programmers focus on logical correctness and soundness.
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Web Design Survey Findings and Next Steps
In November, I wrote about my team’s work on experimental new web design tools and introduced a survey to rank the challenges of web design and development. The insights you shared continue to inform priorities for the Firefox DevTools' 2019 roadmap. Our main takeaway: developers and designers of every experience level want a better understanding of CSS debugging. We're on it.
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Firefox 66 to block automatically playing audible video and audio
Unsolicited volume can be a great source of distraction and frustration for users of the web. So we are making changes to how Firefox handles playing media with sound and we want to make sure web developers are aware of this new audio autoplay blocking default. With the release of Firefox 66, now in Firefox Beta/Developer Edition, the browser will block audible audio and video, and will allow a site to play audio or video aloud via the
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New in Firefox DevTools 65
We just released Firefox 65 with a number of new developer features that make it even easier for you to create, inspect and debug the web. Among all the features and bug fixes that made it to DevTools in this new release, we particularly want to highlight our brand new Flexbox Inspector and all the features and enhancements that deliver smarter JavaScript inspection and debugging.
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Firefox 65: WebP support, Flexbox Inspector, new tooling & platform updates
Firefox 65 ships today with some notable Firefox Devtools updates, including the release of the CSS Flexbox Inspector, a new changes panel, and more. We're shipping CSS platform improvements and updates to a variety of JavaScript APIs. Firefox 65 supports the WebP image format, and support for AV1, an open and royalty-free video compression format, is shipping now in Firefox 65 for Windows.
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Designing the Flexbox Inspector
CSS Flexbox is an increasingly popular layout model that helps in building robust dynamic page layouts. However, it has a big learning curve! The new Flexbox Inspector, created by Firefox DevTools, helps developers understand the sizing, positioning, and nesting of Flexbox elements. You can try it out now in Firefox Nightly or Dev Edition.
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Firefox 64 Released
The year's last release of Firefox bundles together goodies for all, including multi-tab management in the interface, new CSS features, devtools improvements, better privacy protections, add-ons updates, and much, much more. Read all about it!
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Private by Design: How we built Firefox Sync
Firefox Sync lets you share your bookmarks, browsing history, passwords and other browser data between different devices, and send tabs from one device to another. We think it’s important to highlight the privacy aspects of Sync, which protects all your synced data by default so Mozilla can’t read it, ever. In this post, we take a closer look at some of the technical design choices we made in order to put user privacy first.

