🚨 What are some modern web platform (CSS, HTML, JS) features that you wish your AI agent utilized, but doesn't (or gets them wrong)? I’ll go first: - CSS: lh unit, trig functions, nesting - HTML: inert attribute - JS: Regex lookbehind, regex named groups, RegExp.escape(), Object.groupBy()

👉 this is a very helpful overview of how pull_request_target works

April was Plausible's best month ever. Trial signups increased 84% from January to April. No new feature. No paid ads. No viral post. And traffic increased by only 2%. What changed? We spent a few days simplifying our homepage. Full recap: plausible.io/blog/homepag...

A very telling chart. Open Source funding has been frozen for the past four years, while everyone's needs for our shared commons infrastructure have continued to grow exponentially. Pay maintainers properly if you want your dependencies to stop feeling like a minefield.

🆕 The 202604 Chrome User Experience (CrUX) release is now live on BigQuery! Official announcement below: groups.google.com/a/chromium.o... A quieter month this month so not a huge amount to say to be honest! But not every month can be like last month's info-fest! 🧵 1/2

New speed record 🚀 Just measured a 15ms Largest Contentful Paint (LCP), the fastest (prerendered) navigation I’ve seen so far on my website using RUM. #webperf

Determine the moment your complex UI elements are completely rendered for visitors. We are advancing performance metrics by allowing you to monitor containers, cards, and sections of content directly. Evaluate these extra insights by joining the origin trial → goo.gle/49nSTL9

here is the new CSS Border shape API this is going to unlock so many sick new designs

This week marks the final sprint towards Google I/O next week … I’m very much looking forward to my talk “What’s new in Web UI” together with @una.im. io.google/2026/explore... Lots of tweaking and rehearsing, but we’re getting there :) (Yes, the talk is getting recorded) #GoogleIO #ChromeDevRel

An important update courtesy of @tunetheweb.com! csswizardry.com/2026/05/bett...

It's amazing how quickly tech changes. A task on my Mac Book that would've taken at least 4-5 seconds a few years ago now takes maybe a minute, or sometimes it just doesn't work at all. Thanks for the improvements, guys!

Reminder: On 14th of May CSS Day ticket prices will go up by €75 + VAT. Want to come to cssday.nl ? Ordering now is cheaper than ordering later. See you in June,

There's baseline, brower-compat-data, webstatus, caniuse, web-features and a ton more. Wonder how they're all interrelated? The folks at CanIWebView made a nice visualisation: webcompat.dev

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...

My Chrome just updated to 148 and my console says 'loading' in HTMLMediaElement.prototype is TRUE! developer.chrome.com/blog/new-in-...

Speed still matters. "for every 100 milliseconds slower a store loads, conversion tends to be about 3.5% lower. (...) For every 32 milliseconds slower a store responds to interactions, conversion tends to drop by about 1.5%." www.shopify.com/enterprise/b...

Interesting talk from @anniesullie.com at BlinkOn about categorizing every site on the web. Gets into the data around the ~12:30 mark. www.youtube.com/watch?v=dN3C...

It's the last ever All Day Hey this week and somehow there's still tickets. Can't be many tho, so don't miss it. Who's going?! heypresents.com/conferences/...

If AI is increasing productivity SOOOO much, how come the only thing I see shipping faster is AI features? Is that the only thing it helps 10x? Seems kinda limited if it is…

Overheard my 7-year old chatting to her 6-year old friend: Daughter: Did you know AI is gonna take over the world someday. Friend: How Daughter: I dunno 🤷‍♀️ Think she’s ready for a senior position at a big tech firm!!

Ahh kinda sad to see this 😔 But also: it was still a thing until now?!? 😲

Shopify pushing speculation rules up a level and seeing positive gains across the board!

New blog post: NHS Goes To War Against Open Source https://shkspr.mobi/blog/2026/05/nhs-goes-to-war-against-open-source/ The NHS is preparing to close nearly all of its Open Source repositories. Throughout my time working for the UK Government - in GDS, NHSX, i.AI, and others - I championed …

"If you're feeling burned out at all. Especially with all this stupid AI stuff that we won't stop talking about… Build something. Build something fun. Build something silly… And oops you accidentally learned something along the way… We need more of this on the internet." ❤️❤️❤️ www.sillysoftware.club

Fun fact: alt text is not only useful for blind people / people who can't see the image. It can also be useful for those of us who can see the image but need to understand why the author posted the image or what message they want the image to convey.

There's a new #webperf measurement API in the works! Check out this post looking at the work @jason-williams.co.uk and @jdapena.bsky.social have been putting into there Container Timing—available as an origin trail from Chrome 148 (rolling out next week). developer.chrome.com/blog/contain...

It's almost time to implement the Soft Navigations API to accurately measure Core Web Vitals for SPAs (React, Vue, Angular, etc.). We applied your feedback to build the expected final shape. Conduct a final test during the origin trial in Chrome 147-149 → goo.gle/4ttf9eP

I wrote about why I quit my job, and how weird and tiring tech feels these days.

Next Thursday. A curated conference for curious developers, designers, and technology leaders. Last few tickets available: ti.to/hey-presents...

How should you think about using Baseline (web.dev/baseline) to inform your browser strategy? 🤔 At @pixelpioneers.co Bristol on 19 June, @rachelandrew.bsky.social will answer this question and more. Don't miss it!

performance.now() 2026 is coming. Ticket sales will open in May with cheap and ultra-cheap early bird tickets. These will be announced in our newsletter first. So subscribe via perfnow.nl/subscribe perfnow.nl

Fascinating read! Are you leaving money on the table with poor web performance?

🌏🗣️ Localizing PWAs is about to get a whole lot better! With manifest localization, you can now provide translations for your app name, description, icons, and more, which wasn’t possible before. Shipping in Chromium 148. Amazing work from Alexander Kyereboah on the Edge team.

I now write 3,000% of my code using AI! And it’s accelerating!! Ask me anything!!! (Except that)

A *fantastic* article all about CSS containment: csswizardry.com/2026/04/what..., containing practical use cases, gotchas, performance and debugging tips. A goldmine of a resource from none other than the #CSS Wizard himself: @csswizardry.com

Standards! 😎 Looking into this one next and just left a comment with design plans/decisions as we look to nudge it along into potential reality. Video/a11y/perf/responsive images github.com/whatwg/html/...

Wanna measure Core Web Vitals for SPAs? It's been a long-standing gap, but one that we've been working hard to fill. We're approaching the final stages and have launched one last origin trial (🤞) as the "last call" before we ship it! More details: developer.chrome.com/blog/final-s...

🦖 Long animation frame timing 🦖 https://developer.mozilla.org/en-US/docs/Web/API/Performance_API/Long_animation_frame_timing Long animation frames (LoAFs) can impact the user experience of a website. They can cause slow user interface (UI) updates, resulting in seemingly unresponsive co… #webdev

Really excited to see the support for compression dictionaries that @cloudflare.social is working on. Great background on the feature as well.

🆕 The 202603 Chrome User Experience (CrUX) release is now live on BigQuery! Check out the announcement post for the full info: groups.google.com/a/chromium.o... Highlights below 👇 🧵 1/9

Hold it men, he's not bluffing!

If AI is so useful in EVERY, SINGLE product, and companies are so confident in it's usefulness in those products, then why do so few products include an option to turn it off, which would allow measuring how many people actually want it? 🤔

YOU'RE NOT BLOCKADING ME! I'M BLOCKADING YOU

Bramus just shipped a bunch of utility functions to make working with view transitions easier. 🎉 And while browsing the GitHub docs I learned that you can pause view transitions? 👏 https://chrome.dev/view-...

I'd love some feedback on a project. I've been building a lot of claw-like agents recently (mem, tools). I abstracted it into an API that works like Anthropic's Agent SDK but built on the back of Vercel's pluggable AI-sdk github.com/PaulKinlan/a... Does this work for you? What would you change?

That project AI was helping me with that I was so excited about a while back? It's finally ready enough for some public exposure: I bring you "Waterfall Tools": blog.patrickmeenan.com/2026/04/12/i...

Conference organising in 2026 quirksmode.org/quirksblog/a...

do you dislike glass? Settings > Accessibility > Display & Text Size Reduce Transparency ✅ Increase Contrast ✅ This helps a bunch.

We'd like to adopt a logo for the WebDX community group (the group that's responsible for web-features data, which powers Baseline). We have 3 proposals from our community. Help us choose by voting at github.com/web-platform... with a 👍 on the one you prefer!

The great CSS expansion. Pavel Laptev tours CSS features replacing JavaScript libraries like Floating UI, Radix, GSAP, and React Select, cutting up to 322 kB of JavaScript. #css #performance blog.gitbutler.com/t...