So here's an interesting little thing or 2 @nomster.bsky.social , @foolip.org , and myself have been cooking up—along with lots of help from others!: developer.chrome.com/blog/declara... This could lead to some VERY interesting changes in how we write web pages. Would love to hear your thoughts!

❓ A question for web developers ❓ If you do layout in CSS, what's missing? I'm especially interested in hearing about use cases that aren't yet solved by existing CSS layout features. #css #webdev

flex-wrap: balance has the same issue as text-wrap: balance where you can't have the items/text be both left-aligned and centred when they're wrapping. Still a cool feature though. chromestatus.com/feature/4547... codepen.io/cssgrid/pen/...

CSS Gap Decorations is shipping in Edge and Chrome 149! Really proud of all the work the team did to solve this longstanding web developer ask. developer.chrome.com/blog/gap-dec...

Blink: Intent to Ship: Responsively-sized <iframe>

🚀Rolldown 1.0 is here!🚀 Rust-based high-performance JavaScript bundler. 🏎️ Runs at native speed that’s up 30x faster than Rollup 🤝 Compatible with existing Rollup & Vite plugins ⚡The underlying bunder for Vite After 2 years, Rolldown is officially stable and has 20+M weekly downloads.

We, Chrome, are currently working on a way to do route matching in purely CSS as well: drafts.csswg.org/css-navigati... (draft spec). This addition would remove the need for any script to achieve directional View Transitions 🥳

In Chrome beta, native form controls no longer reflect the users system preferences. Weird to describe this as a "feature launch" that "introduces more consistent user expectations for system colors" when it's actually a regression.

The Web Frameworks Community Group now has over 60 members representing Alpine, Astro, Ember, Lit, Lustre, Marko, Preact, Qwik, React, Ripple, Solid, Stimulus, Svelte, Vue, Web Components, htmx, and more! Did I miss your favourite? Come join us and represent! discord.com/invite/fXCng...

🆕 The URL Pattern API is Newly Available! Use it to match and extract parts of URLs, no need to reinvent routing logic. Supports literals, wildcards, named groups, and even regex constraints. Learn how it works 👇 developer.mozilla.org/en-US/docs/...

Remix 3 preview is ready Just run `npx remix@next new my-remix-app` to get started remix.run/blog/remix-3...

If you’re an open source maintainer, you can get paid to participate in web standards. A great initiative. Funded by the German government, but anyone around the world can apply.

Blink: Intent to Ship: Focusgroup

Added support for the closedby attribute on dialog elements. Added support for the more powerful version of the CSS attr() function.

If you're a framework author or maintainer, please consider joining the WFCG! discord.gg/fXCngmSwHz We're trying to find ways the web platform can be improved for frameworks, what new primitives can be added, or what can be changed. We'll be talking about templating today, come join!

Blink: Intent to Experiment: Parse processing instructions in HTML

My favorite #CSS additions are often the simple ones that make a big difference (in UX or DX), and the light-dark() function adding support for images is now one of them 🙌🏻 www.bram.us/2026/03/19/m... @bram.us

POLLS: The CSS Working Group is looking for author feedback on two topics related to CSS Gap Decorations. Questions below. For background information on Gap Decorations, see the explainer: github.com/w3c/csswg-dr...

I think it's often overlooked that AVIF is also really good at flat colour & sharp edges. Don't go straight for a lossless format just because it's the kind of image that would look bad as a JPEG. Here's an 11kb image as an AVIF, vs JPEG XL.

Customisable select! (Single select in dropdown mode only for now)

Gecko: Intent to ship: ariaNotify

Pretty shocking that this didn't exist already.

I’m still hoping we get a standardized DOM templating API github.com/justinfagnan...

Just tried this out in Chrome Canary. Pause/play animated gif/png/webp/avif/JPEGXL. Very cool github.com/w3c/csswg-dr...

Please help with this, they don't even need to be good examples, feel free to send us the bad ones too! This is gonna take *years* but the more examples we have now the sooner we can start getting to the really detailed discussions.

Browser developers are working on custom form controls ( `appearance:base`), the next giant task is looming: customisable input type=date/datetime/color pickers. These are huge and have wildly varied UI. Send me your examples, I'd love to see them and build up a body of these pickers.

👀 Interop 2026 dashboard just dropped See what browsers will focus on this year, more likely be come widely available soon. Particularly interested in: - Navigation API - Scroll-driven animations - popover="hint" - Continue work on ViewTransition, anchor positioning - more

Working on some interesting stuff...

This week's Web Weekly is about to hit all the inboxes in just a little bit! As always, it's jam-packed with baseline updates and new web dev features. 🎉 webweekly.email/archive/web-... If you're into web dev news close to the platform, you should check it out!

I'm not a fan of Udio or Suno so I tried asking ChatGPT and Gemini to write me a song using the Web Audio API... it's not great.

One more custom <select> demo, with a bunch of CSS transforms and animations. I can't get enough of this. So cool.

Blink: Intent to Ship: JSON and style support for link rel=modulepreload

The Astro Technology Company team — the creators of the Astro web framework — is joining Cloudflare. We’re doubling down on making Astro the best framework for content-driven websites. https://cfl.re/4qlJCd3

Despite the ubiquity of WOFF2 for smaller font files and modern image formats (WebP, AVIF) page weight continues to grow 🤔

A CSS `image-animation` property: groups.google.com/a/chromium.o.... The example below would pause all animated images (like GIFs), and only play them when hovering or focusing an image: ```css img { image-animation: paused; } img:hover, img:focus { image-animation: running; } ```

Gecko: Intent to ship: colorspace and alpha attributes for `<input type=color>`

Initiating navigations with the Navigation API. @ollie-williams.bsky.social shows navigate(), reload(), back(), forward(), and traverseTo(), plus state, info, and committed and finished promises for intercepted navigations. #js #router #url olliewilliams.xyz/blog/initiat...

New year, new web performance mystery (and it's a huge one): calendar.perfplanet.com/2025/the-cur...

My Christmas wish is for someone to just add the necessary internal test API to check if it's worked. Then I can get it working 😅.

My Christmas wish is for Safari to fix showPicker olliewilliams.xyz/blog/showpic...

Man, I love that view transitions make things like this possible with only a few lines of code. 🥰

Streams are now iterable in Safari Technology Preview developer.apple.com/documentatio... web.dev/articles/str...

@nomster.bsky.social I noticed in the Navigation readme it says: "The desired semantics of navigation API state is that it be carried over on fragment navigations." As far as I can tell that doesn't happen in Canary. Is there a plan to add that functionality?

Safari 26.2 is here with 65 features + 165 bug fixes — including field-sizing, Navigation API, Largest Contentful Paint, command & commandfor, CHIPS opt-in partitioned cookies, scrollend event, random(), WebGPU in WebXR, scrollbar-color, hidden=until-found and much more! webkit.org/blog/17640/w...

`overflow: clip` is my default. In www.bram.us/2024/02/14/s... I wrote: “I see no reason to use `overflow: hidden` your site, unless you have a good reason to. Using `overflow: clip` has exactly the same outcome, doesn’t interfere with Scroll-Driven Animations, and has great browser support.”

Do you know about the developer-signals repo? If you want to see a feature supported across browsers, now you can go and upvote it, anytime github.com/web-platform...

Alpha-channel support in AV2?! blog.mozilla.org/en/mozilla/a...

sibling-index() currently works in Chrome/Edge and Safari Technology Preview Hat tip to @jamessw.com