Jake Archibald retweeted
Firefox 159 has landed! This is a pretty big one for web dev stuff:
🎉 CSS scroll-driven animations, both scroll() and view().
🎉 Scoped custom element registries.
🎉 Streaming sanitization of HTML.
And more! developer.mozilla.org/en-US/docs/Moz…
🎉 CSS scroll-driven animations, both scroll() and view().
🎉 Scoped custom element registries.
🎉 Streaming sanitization of HTML.
And more! developer.mozilla.org/en-US/docs/Moz…
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Jake Archibald retweeted
JPEG XL is newly available in all major engines, but how does it stack up against other formats?
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A quick demo of how gain maps help with HDR image rendering, even on HDR screens.
In browsers, JPEG and AVIF support gain maps. JPEG XL does not. AVIF is the better choice, as the source can be 10bit, and obviously the file size is a lot smaller.
In browsers, JPEG and AVIF support gain maps. JPEG XL does not. AVIF is the better choice, as the source can be 10bit, and obviously the file size is a lot smaller.
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See the demo for yourself jakearchibald.com/2026/jpeg-xl-v…
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More dishonesty in JPEG XL discourse.
Why compare to a 25+ yr old format rather than anything more modern?
Why claim HDR support, without making it clear that gain maps (an important part of HDR in varying environments) are not supported?
Why compare to a 25+ yr old format rather than anything more modern?
Why claim HDR support, without making it clear that gain maps (an important part of HDR in varying environments) are not supported?
Chrome 155 adds support for JPEG XL (.jxl) → goo.gle/4yYpSjW
Expect 30-50% smaller file sizes than traditional JPEGs, native HDR, progressive rendering, and lossless JPEG transcoding.
Under the hood, Chrome uses jxl-rs, a pure Rust decoder built for maximum memory
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Jake Archibald retweeted
@ChromiumDev So, the "unguided agent" has produced a modal that animates in & out in all browsers, but with the power of Google's Modern Web Guidance it has used a pattern that only animates out in Chrome?
Does the skill warn the developer that it's biasing the output this way?
Does the skill warn the developer that it's biasing the output this way?
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Jake Archibald retweeted
What should we ship in 2027? Rank your favourite features & create your wishlist: interop-rank.fxdx.dev
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JPEG XL has arrived on the web, but how does it stack up against AVIF? jakearchibald.com/2026/jpeg-xl-v…
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Jake Archibald retweeted
We've loved seeing folks post their rankings, so we've added a share button!
You can either share your list via the site directly, or copy your list as markdown/html for your own blog.
interop-rank.fxdx.dev
You can either share your list via the site directly, or copy your list as markdown/html for your own blog.
interop-rank.fxdx.dev
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I'm really glad we're running this again. It helped us prioritise a lot of work this year.
The previous method was 👍 on GitHub issues, which (imo) is too easily gamed, either intentionally or unintentionally.
x.com/FirefoxWebDevs…
The previous method was 👍 on GitHub issues, which (imo) is too easily gamed, either intentionally or unintentionally.
x.com/FirefoxWebDevs…
What do you want us to work on in 2027?
Here's a web app where you can rank the Interop proposals you care about, giving us data we can use to prioritise feature development.
interop-rank.fxdx.dev
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Jake Archibald retweeted
What do you want us to work on in 2027?
Here's a web app where you can rank the Interop proposals you care about, giving us data we can use to prioritise feature development.
interop-rank.fxdx.dev
Here's a web app where you can rank the Interop proposals you care about, giving us data we can use to prioritise feature development.
interop-rank.fxdx.dev
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I've proposed "progressive image rendering" as a focus area for Interop 2027, so we can get progressive JPEG XL support in Safari, and progressive AVIF support in both Safari and Firefox. github.com/web-platform-t…
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This is a great article. I've always been sus about the hype around JPEG XL, as it never stacked up when I actually tested it with web use-cases.
giannirosato.com/blog/post/case…
giannirosato.com/blog/post/case…
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Jake Archibald retweeted
When and how CSS custom property values are calculated might not be what you expect, and it has a big impact on your styles…
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Jake Archibald retweeted
The CSS progress() function is now in all major engines! Here's how it works:
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Playing around with an idea: responsive code.
The build script creates up to 5 versions of each code sample using Prettier, and a container query displays the right one.
Brotli means the filesize overhead is very small.
Live demo: jakearchibald.com/2026/css-custo…
The build script creates up to 5 versions of each code sample using Prettier, and a container query displays the right one.
Brotli means the filesize overhead is very small.
Live demo: jakearchibald.com/2026/css-custo…
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Jake Archibald retweeted
CSS attr() now works on all properties in Firefox 155. Here's how it works, and how to get the most out of it: instagram.com/reel/Dc05U1ilb…
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Jake Archibald retweeted
Major versions of Firefox now land every two weeks, so Firefox 155 dropped today with web platform features including:
🎉 Fully typed CSS attr()
🎉 CSS progress()
🎉 Promise.allKeyed() and allSettledKeyed()
🎉 Lots of new WebTransport stuff
…And more!
developer.mozilla.org/en-US/docs/Moz…
🎉 Fully typed CSS attr()
🎉 CSS progress()
🎉 Promise.allKeyed() and allSettledKeyed()
🎉 Lots of new WebTransport stuff
…And more!
developer.mozilla.org/en-US/docs/Moz…
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Jake Archibald retweeted
📝 When and how CSS custom properties are calculated might not be what you expect, and it has a big impact on your styles.
Here's how it works: jakearchibald.com/2026/css-custo…
Here's how it works: jakearchibald.com/2026/css-custo…
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📝 When and how CSS custom properties are calculated might not be what you expect, and it has a big impact on your styles.
Here's how it works: jakearchibald.com/2026/css-custo…
Here's how it works: jakearchibald.com/2026/css-custo…
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