Casey Carroll

📝 New Post: Recursion is DEAD and HTML killed it. daverupert.com/2026/10/html...

<elton-john-voice>🎶 THE CIRCLE OF LIIIIIIIIIIIFE!</elton-john-voice> github.blog/engineering/...

What if Ultimate-Guitar but on atproto? I'm playing around with a little idea, it's fun, come join! leadsheet.fm/sheet/jaz.sh...

And we've made friends with the front of the JS framework benchmark 🏎️

Missed this doing the rounds before (but thanks to @piccalil.li newsletter at least I eventually got it!) danq.me/2026/07/09/y...

🔥 Delighted to have served a tiny part in a huge month for Marko

✂️ Knip v6.31.0 is out This one's dedicated to a brand-new @markojs.com plugin. Thanks a bunch, @caseycarroll.github.io! That's 179 plugins: knip.dev/reference/pl... → knip.dev

A month ago I started exclusively viewing instagram through the web. This inadvertently massively cut down my screen time. Sometimes terrible web performance is a good thing!

PORTLAND FOLKS! IMPORTANT This is an excellent introduction to an excellent service. In comparison to Buy Nothing or Freecycle (and you live here in Portland), this is the structurally better option. As you use ATProto, the system that supports Bluesky, you already have an account with Gifthood.

How is no one talking about Vite HMR mode blocking cross-doc view transitions? Are people silently working around this by generating builds to test their view transition animations? The DX for this is no good!

The Safari team's reason for opposing Web MCP struck a cord with me. It is something I've struggled to articulate in the past. In fact, their comments contain the seed of a design principle that the W3C should adopt. cloudfour.com/thinks/impro...

p75 and p90 JavaScript bytes on the web have exploded since May, 2025—easily the largest 10 month period based on HTTP Archive data since 2023. The long-tail is getting worse, very quickly. Gemini, what happened in May 2025?

Many developers misinterpret what the DevTools performance test results tell them. My video below explains how Chrome implements network throttling and how it impacts your data. Neither the bandwidth nor the latency implementation match what you'd see on a real slow network. youtu.be/93HI4dnGjMk

ICYM this post by @cheddybop.bsky.social, it has never been clearer that the legacy frameworks (React, Angular, etc.) will never turn the corner on mobile perf; and mobile is most of the web. The only winning move is to decamp to something *actually* modern: lorenstew.art/blog/10-kanban-b…

Largest Contentful Paint (from Core Web Vitals) is now available in Safari Technology Preview. webkit.org/blog/17504/r...

There is hate for JS on the server. But none have accomplished what @markojs.com has. Forget Islands, forget serialization boundaries, forget writing code twice. Just declarative templates, low JS, automatically. @dpiercey.me joins me Friday to show how it's done. www.youtube.com/live/x-3RxGf...

Haven't been keeping up with the webperf slack, but this was in the scrollback from March, and shows so directly how understanding the rendering engine unlocks better experiences for everyone, not just folks on low-spec machines and networks: granola.ai/blog/dont-animat…

It's not Baseline, but CSS-only carousels are coming to Chrome 135! developer.chrome.com/blog/carouse... by @nerdy.dev

New blog post: Updates to the customizable select API una.im/select-updates/

I use this feature when measuring pixels with the built-in screenshot utility. I can zoom in to be more precise without affecting the pixel calculation. One of my favorite little things about using a Mac!

I guess it is time to introduce Bluesky to my latest work, HTML for People. Anyone can make a website with HTML. No previous coding experience required. I cover everything you need to know to get started in an approachable and friendly way. And it’s free for all. 🚀 htmlforpeople.com

Screw it, here's a 10% discount link for Complete CSS for my Bluesky pals. It's been a great year here. Long may it continue. piccalil.li/complete-css... The code expires on the 26th at midnight UK time!

I think a lot about how the principles of design and UX are fundamentally incompatible with capitalism; at a certain point, they have opposing priorities. That means if you're in the field, your company is paying you to care about something it will never care about. And that's a recipe for burnout.

What does it mean for something to be Turing complete? I answer this question, and more, through a series of fully interactive Turing machine simulations! Play, pause, step forwards and backwards, and even write your own Turing machine programs in my latest blog post. samwho.dev/turing-machi...

I’m looking forward to 2025. eBay has its sights set on improving developer experience, and we already have some cool things rolling out. Check out how we can test multiple systems in isolation with Isolates! www.linkedin.com/pulse/isolat...

Sometimes you gotta remind designers that the browser has a “see more” feature built in. Let’s give it up for the humble scroll bar, folks

Did you know that key #webperf / #ux metrics (like #CoreWebVitals) aren't supported in Safari? If that's news to you, you're not alone! @cliffcrocker.bsky.social explains why that is... and what we and the rest of the web performance community are doing to fix it. www.speedcurve.com/blog/core-we...

They should put HTML in the browser