Keith Cirkel

For those who want to test their perception of colour, I made a little game called "What's My JND" www.keithcirkel.co.uk/whats-my-jnd...

Scoped registries and streaming sanitizer have been the main bulk of work for my year, and it’s a huge win to get them both shipped!

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/M...

Since 2004, this community has helped make Firefox and the open internet possible. Our “Come Back to Firefox” campaign reunites a few early internet icons to remind people what made the internet special, and why it’s worth protecting.

while you port and emulate games, I ported Jira to my PSP

Apropos of nothing, if you're considering switching from a recently deprecated browser and want to try Firefox, I just landed `Copy Tab URL` in nightly - it's not bound by default but a quick visit to `about:keyboard` will let you set it, and also take a glance at the other neat shortcuts we have.

Lola is working on some really valuable stuff here. Consider taking 30 seconds to answer this quick single question survey.

Things I hope to push forward at TPAC: - Declarative fragment / client side include - declarative skeleton/shell - CSS navigation matching - parser/patch reflection in mutation observers - responsive image improvements - connection allowlists - focusreset - CSS module imports Gonna be interesting!

I’m looking to connect with university lecturers and staff. We offer student tickets for @ffconf.org, but they’re easy to miss, and I’d love to give the next generation of web developers the chance to attend a great indie event. If anyone can contact please drop me comment here I can follow up.

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

I built a game for September (actually I've been working on it since July). Inspired by Waldschattenspiel. www.keithcirkel.co.uk/dungeon/ The explorer must escape the dungeon, the monster must find them before they do. My first multiplayer game! I'm sure there are many bugs. Networking is hard.

incredible news: we’re having the same arguments over and over for the rest of time

Web developers! Do you use html forms? Do you let forms submit or just use them for UI and call fetch()? Don’t use forms? Tell me why. Do? Tell me what’s painful. Let’s see if we can fix it!

Wait, now we can have screen reader announcements without ARIA live region hacks?! Baseline 2026 🤯 developer.mozilla.org/en-US/docs/W...

I just released avash: www.keithcirkel.co.uk/avash/ It’s like blurhash but uses av1 frame data encode an image, resulting in a (typically) more readable image in the same bytes as a blurhash. github.com/keithamus/av...

We're chatting about Declarative Partial Updates at the Web Frameworks Community Group. Want to join in? discord.gg/fXCngmSwHz

I want Custom Attributes to exist - think Custom Elements (Web Components) but Attributes. I've been working on a proposal, specs, and now a polyfill: www.keithcirkel.co.uk/custom-attri... More coming soon!

I want Custom Attributes to exist - think Custom Elements (Web Components) but Attributes. I've been working on a proposal, specs, and now a polyfill: www.keithcirkel.co.uk/custom-attri... More coming soon!

Delving deeper into browser accessibility, I’ve begun the work of implementing role computation for HTML elements in the @servo.org browser. (fingers crossed I can merge next week 🤞🏾) github.com/servo/servo/...

Gecko: Intent to ship: Scoped Custom Element Registries

We have no meet-ups for over a year and now there are 2 with the space of a month londonwebstandards.org/newsletters/... Tell your friends @browserchoicealliance.org #OpenWebAdvocacy #UncleBruce (aka @brucel.bsky.social) #MakeTheWebBetter

That feeling when your Yack Stack is so high that you're running out of disk space with the amount of git worktrees you have (yes this is Rust. Yes I am using cargo sweep).

I've been playing this all day, addicting as it is frustrating. Love all the little details like how satisfying it is to shoot the rocks. If you're looking for something to take out your rage on between compiles this is a good free web game. farfield.mttshw.com

Intent to ship: JPEG XL! This will be on-by-default in Firefox 157, which should become the main release version at the end of September. This includes key JPEG XL features like progressive rendering. groups.google.com/a/mozilla.or...

Given <button><span>Foo</span><div popover>Bar</div></button> The popover is open, you hover it, does `<button>` match `:hover`? `:active`? We could break the association on the top layer (popover) boundary. Question is: is that useful? How do you work around either way?

Firefox 154 landed today, and brings with it some great web platform features: 🎉 CSS text-box 🎉 CSS sibling-index() and sibling-count() 🎉 JS Iterator methods like chunks, window, includes, & join 🎉 HTTP No-Vary-Search …And more! developer.mozilla.org/en-US/docs/M...

Web Frameworks Community Group discussed Declarative Partial Updates developer.chrome.com/blog/declara.... We’re getting feedback from framework authors to take to standards bodies. Have opinions? Want to be heard? Join the discord! discord.gg/fXCngmSwHz

Andy DON’T Burnham more like

BIG NEWS: Bocoup is now Igalia! The two worker co-ops have agreed to join forces, with several members of Bocoup coming aboard at Igalia, along with the brand assets and web site. More details in our official announcement: www.igalia.com/2026/Joining...

I really love my job. I thought I'd always be a web developer, but developing the web is so much more fun! Adding new features for ~4bn customers is such a satisfying feeling.

Tech Company: At long last, we have created the Vast and Trunkless Leg of Stone, Standing in the Desert from classic poem Ozymandias.

Wordn't of day 222: jupenter "noun the taste and/or scent of the first few minutes of a fresh rainstorm as it hits the roof of your mouth" Play today's word: https://k9l.io/wordnt See past words: https://k9l.io/wordnt-dfns?day=222 #wordnt #game

Current status. We're also closing tickets tonight until September. More details on tickets and the event: ffconf.org/articles/202...

Porffor officially goes alpha on August 11th with an in-person in San Francisco! It brings self-hosting and a complete rewrite, plus more: honk.foo/porffor-alpha/

the good thing about a democratic society is that we don't have to guess at what taiwanese people think:

Wordn't of day 195: suscod "noun A very suspicious cod" Play today's word: https://k9l.io/wordnt See past words: https://k9l.io/wordnt-dfns?day=195 #wordnt #game

Hi! I'm working on a new HTML feature: filterable select There are two proposed API shapes so far: 1. Nesting <input> in <select> 2. Sibling <input> for listbox <select> w/id ref Option 1 is more ergonomic, but would break selects in older browsers Thoughts? (Both currently in Canary w/flag)

There's an ideal set of sizing constraints for custom <select>, but the CSS is a bit tricky. Here's how to make it work, and a tour of new CSS features along the way. jakearchibald.com/2026/goldilo...

Happy 4th July American friends! Consistent feedback from my JND game was people wanting to test their strength at specific hues; some claimed they were better at detecting reds, or blues. So I figured a special "Whats My JND 4th July Edition" could do just that! 🫡🫡🫡🇺🇸🇺🇸🇺🇸🫡🫡🫡 k9l.io/jnd-4th-july

Okay I’ll bite, who’s Taylor Swift?

Happy 4th July American friends! Consistent feedback from my JND game was people wanting to test their strength at specific hues; some claimed they were better at detecting reds, or blues. So I figured a special "Whats My JND 4th July Edition" could do just that! 🫡🫡🫡🇺🇸🇺🇸🇺🇸🫡🫡🫡 k9l.io/jnd-4th-july

Better late than never, I've finished off my game for the month of June! Introducing "Wire Loop". A game where you drag a loop around a wire, and try not to touch the wire. It has a level editor for you to share new levels among friends! k9l.io/wire-loop

Better late than never, I've finished off my game for the month of June! Introducing "Wire Loop". A game where you drag a loop around a wire, and try not to touch the wire. It has a level editor for you to share new levels among friends! k9l.io/wire-loop

In programming languages that do not use templates or generics, I use the Unicode symbols ᐊ and ᐅ as visual mnemonics, like MyTypeNameᐊint64ᐅ. Works for me but coworkers think I am Satan.

CSS `field-sizing` is now Baseline Newly Available! It replaces JS code we won't be missing. web-platform-dx.github.io/web-features...