Firefox 158 landed today! For web devs: 🎉 JPEG XL support, including full progressive rendering. 🎉 'navigate' on notifications, so they can go to a URL without firing events. 🎉 WebGPU's float32-blendable 🎉 WebGL's EXT_polygon_offset_clamp And more! developer.mozilla.org/en-US/…

What should we ship in 2027? Rank your favourite features & create your wishlist: interop-rank.fxdx.dev/

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/

We ran this last year to decide what to champion for Interop 2026, but the data was so good, we also used it to prioritise features beyond the Interop project. We've also added some features to make it quicker to rank items.

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/

Firefox 157 has landed, and includes a couple of useful CSS features: 🎉 at-rule() in @supports - limit rules to browsers that support a given at-rule. 🎉 overscroll-behavior: chain - allow chained scrolling without overscroll effects. …And more! developer.mozilla.org/en-US/…

When and how CSS custom property values are calculated might not be what you expect, and it has a big impact on your styles…