Also, if you work in #accessibility, then please consider, I dunno, trying to break it? The explainer (linked in pen) leans on APG patterns. You can override with roles. Mix with other patterns. Poke with a stick. Let’s sort bugs *before* WHATWG HTML accepts the PR from Open-UI. #a11y #HTML

Playing with `focusgroup` support in Chrome 150 and I like seeing the browser assign role based on the `focusgroup` token. Yes, you can override with explicit `role`, which will undoubtedly happen as devs choose kbd patterns that don’t match the role. But still neat. codepen.io/aardrian/pen...

The first part of Declarative Partial Updates (`<template for>` out-of-order HTML) is now available, unflagged, in Chrome 150!! developer.chrome.com/release-note... The second part (the new JS setting APIs, include the streaming ones) we're still working on the spec side, but maybe for Chrome 152?

focusgroup has shipped in chromium 150! developer.chrome.com/blog/new-in-... Its been a long time coming, glad to have been able to get this out the door! Also note that there polyfill ready to go: www.npmjs.com/package/@mic...

It's 27°c outside, it's 31°C inside. It's going to be days before my flat decides to cool down again.

We regret that our event on Extreme Heat: Improving governance and strengthening action around the world has been cancelled due to the red extreme heat warning issued by the UK Met Office. Our apologies to everyone who was planning to attend the event.

While you're cooking in the heat this week, do bear this in mind.

As of this morning we have 43 tickets left for #SotB2027 And we haven't even announced the line up. Do not be disappointed and buy early 2027.stateofthebrowser.com/tickets/#:~:...

Blink: Intent to Ship: aria-actions

Icon-only options in a customizable <select> break three things: ❌️ users who don't recognize the icon have no help ❌️screen readers have nothing to announce ❌️browsers w/o support show an empty dropdown There's just 1 fix for all three cases: keep the text Learn more:

If your content is served over HTTP/3, make sure your DNS record advertises it, otherwise you're missing out on free performance. Check your site here: savearoundtrip.com

The world's first trillionaire did this

Time for the best conference of the year webengineshackfest.org

Well I may have spent €10 to choose a seat but I now have 3 seats to myself so I'd call that good value for money.

YES, Dark Mode Toggles _should_ be a browser feature. I wrote about this before: brm.us/dark-mode-ov... Find the link to the Chrome Bug in the post, and hit the star next to it to "upvote" the bug. (I even have a prototype extension to provide this for you: brm.us/chrome-dark-...) #cssday

A society with one trillionaire and millions of people in poverty is something to be deeply ashamed of, actually

Just letting you know: There are less than 100 tickets left for #SotB2027 Tickets go back on sale 19 Jun 2026 09:00. In the meantime buy tickets for @pixelpioneers.co, @webdevconf.com, & @fronteers.bsky.social

What web technology is coming in Safari 27.0? Find out here. webkit.org/blog/17967/n...

"Boo the EU (just barely) holds us to account so no slopware for you" I notice they vaguely mention security when talking about the EU but for china it's just 'regulatory requirements'

Deepfakes, but privacy preserving

wwdc went from "child safety is important" to "we have deepfakes too"

We respect photographers that's why we're letting users AI slop photos instead of paying a photographer!

“Do you, Peter Phillips, take NHS Nurse to be your lawfully wedded wife?”

In just under two weeks we will welcome over 160 people to the 2026 Hackfest! 9 talks and 22 breakout sessions over 3 days. We're looking forward to seeing everyone! In person registration is closed but you can still tune in remotely June 15-17. For more information: github.com/Igalia/weben...

Chrome 150 beta is going to be an exciting update: - flex-wrap: balance 👀 - Media element pseudo-classes - focusgroup attribute - light-dark() with image values - image(<color>) function - CSS text-fit - AccentColor and AccentColorText system colours and more... #css #html

It’s important to know (IMO) that headings can never go beyond level 9 with this feature: adrianroselli.com/2024/05/leve... And avoid pushing past 6. #accessibility #a11y #HTML

Ever struggled to get heading tags right in includes/components? headingoffset could be the answer…

🫰🤬💰 What most annoys you about #payments on the #web? I want your opinion as a dev, customer, merchant, framework author - all of it. What causes you to get part way through a purchase and then just give up? 🔁 Casting a wide net, so share away! Feel free to message if you don't want to comment!

I hear someone wanted artist palette checkmark in their input ;) codepen.io/lukewarlow/p... (need chromium with experimental web flag enabled)

*sigh* that is all. Maybe one day I'll be able to put into words but for now, just... *sigh*. This shit is why RAM costs a kidney.

Declarative Partial Updates and the Dynamic Markup (streaming HTML insertion) APIs have the potential to change web development. declarative-partial-updates.paulkinlan-ea.deno.net

Watch out! Chrome has a huge bug with <input type="number"> which causes values to change unexpectedly. It's fixed in Chrome 150, but that won't land until the end of June.

New on the blog - Some (suprisingly fun) history of a CSS problem and a resolution that my colleague @andreubotella.com has been working on @igalia.com - we could use your help testing! bkardell.com/blog/GetClam...

🚀 Wow, this is finally happening! npm plans to block postinstall scripts by default in a future release In the near future (phased rollout), we will likely get a warning github.com/npm/cli/pull...

Can't emphasise how much I feel these are exactly the sort of use cases and users the web was made for: "hobbyists, hackers, educators, makers and developers"! Not everything has to be about corporate bottom lines sometimes the web can just be for fun tinkering (but also lots of real world use too)!

On this Woden's Day, we say Skål to asm.js! spidermonkey.dev/blog/2026/05...

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!

Very pleased to see Web Serial API! 🤞for WebNFC and who knows maybe even WebUSB or WebBluetooth down the line.

👀 (there's a reason there's no property access not any function calling lol)

A huge shoutout to @igalia.com on the collaboration with Salesforce, Google and others on delivering Trusted Types that helps protect against XSS. developer.mozilla.org/en-US/docs/W... cc: @lukewarlow.dev @mikewe.st

I already think the battery status API probably shouldn't be exposed to websites, but what's even weirder is there's no user permission prompt not does chrome offers any user setting to blanket deny sites permission to access it? It's async so it's definitely possible to insert a permission step.

I’ve been working with a client who runs a lot of social media and ad campaigns, so we’ve been deploying the experimental `No-Vary-Search HTTP` header. It’s amazing to see it actually working! Read all about it here: csswizardry.com/2026/05/bett...

If you buy a super early bird ticket for State of the Browser, we can guarantee there’s no chance of DHH being anywhere in the room.

Recently, we fixed an unprecedented number of latent security bugs in Firefox identified by Claude Mythos Preview. Here's how we approached this work, what we found, and what we learned: hacks.mozilla.org/2026/05/behi...

Who decided that blue sky profile headers were fixed now (I think it's new?). Some profiles have so much in there that it's essentially impossible to read their posts.

Are you coming to @igalia.com's @webengineshackfest.org ? Have something you'd like to talk with people about or show off? Missing W3C breakouts? We have them too! Submit a breakout: github.com/Igalia/weben...

I think my favourite part of this conference has been when the audience cheered as @jakearchibald.com selected some text along a curved line ❤️ #AllDayHey

Leaving Manchester now bound for Leeds! Looking forward to All Day Hey, and seeing everyone attending.

Nice to see field-sizing will soon be in all major 3 engines!

Gecko: Intent to Ship: field-sizing:content