Rather than the same old boring internet pranks, I thought I'd build something more fun this April Fools. CSS or BS. Can you tell your CSS properties names from BS? www.keithcirkel.co.uk/css-or-bs

reading: What Is CSS Containment and How Can I Use It? csswizardry.com/2026/04/what... — my prayers were answered! Harry explains all 🙏 for my next wish...

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?

📝 New CSS Article! If you have seen my graph theory demo and wondered how it works, then the article is finally live! frontendmasters.com/blog/two-cir... I was playing with two circles and anchor positioning, and ended up creating a shortest path algorithm. Modern CSS is fun!

Cool view transition demo by @paolo.ricciuti.me !

Point blank is now a part of the Browser.

Honestly feels reality is being written by a game of card against humanity at this point.

After implementing Compression Dictionaries back in December, I sat down with @yoav.ws and @patmeenan.com to discuss getting the most out of them and provide some visuals for those new to the concept. Check out the video below: youtu.be/YR2er3EiYnM / lessonsofacto.com/videos/032-c...

Seeing that BoJack horseman ended 6 years ago:

Decided to build a calendar grid with web components and view transitions to add animation for back and forward with view transition types. iankduffy.com/examples/vie...

Resource heavy data centres running models that generated CSAM, assisted suicides and are all trained on stolen material. The boat is already far too long gone for this type of groupthink bullshit. Mozilla could have fully revived themselves in being opposition to AI, but another foot gun it is.

How does speed impact how visitors experience your website? And how can metrics hide real-world problems visitors face? My new article explains the impact of performance on user experience and behavior + how to interpret metrics in context. www.debugbear.com/blog/web-per...

Kemi discovering after 15 months that Robert Jenrick has been plotting in "secret"

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

Trump "military operation" list youtu.be/V1508wboZXk

New year, new unit test failure due to someone forgetting to mock time.

Tips for Making the Performance Panel Less Overwhelming, by @duffeh.bsky.social (@perfplanet.bsky.social): https://calendar.perfplanet.com/2025/tips-for-making-the-performance-panel-less-overwhelming/ #performance #devtools #browsers #chrome #google

Web Performance Calendar day 31 article 4/5: @twnsnd.com on Compression Dictionaries to dramatically shrink responses (60–90% smaller than Brotli/GZIP). Why adoption is slow. Practical architectural decisions and implementation tips to get huge bandwidth wins. calendar.perfplanet.com/2025/from-th...

My article for Performance Calendar is live, looking at tips to help focus when doing performance traces.

Web Performance Calendar day 27 with @nucliweb.net on using Chrome DevTools for fun and profit: inspect heavy files in Network panel, monitor Core Web Vitals, record performance traces, validate optimizations, and more. calendar.perfplanet.com/2025/chrome-...

Web Performance Calendar day 26 with Sébastien Mischler on HTML streaming/flushing and how this old trick (featured in the first edition of the calendar) applies to today's CSR world. Show content now, not after JS finishes thinking. Fast pages, happy users. calendar.perfplanet.com/2025/revisit...

Can't wait for the loosened up, non-perfect, but quickly shipped AI-enhanced updates to hit my banking and insurance services next year. Im sure there will be no issues there at all.

Web Performance Calendar day 21 with Conor McCarthy and lessons learned from web perf client site reviews calendar.perfplanet.com/2025/insight...

Web Performance Calendar day 13 with Yoav Weiss (@yoav.ws) showing us a clever and creative way to ship *only* critical/necessary CSS for each page type (home, search, etc) while also avoiding duplicate code in the CSS bundles. calendar.perfplanet.com/2025/how-to-...

With talks from an international line-up: • Bramus Van Damme (Google) • Léonie Watson (Tetra Logical) • Fiona Safari (Tesco) • Jake Archibald (Firefox) • Alistair Shepherd (Series Eight) • Cassie Evans (GSAP/Webflow) • Phil Hawksworth (Deno) ti.to/hey-presents...

🎉 And we're live! 🎉 We just launched CSS Wrapped 2025: our annual recap of all things CSS & web UI that landed in Chrome over the course of the year. 🚀 This is a big one! We highlighted 22 new features to help you build better on the web. Check out: chrome.dev/css-wrapped-2025

Who has made this 🤣

That ghost of yotei main story done 😭 after 62 hours.

Heavy tooltip libraries about to get ripped out:

Hey folks, tomorrow myself and a bunch of other web perf experts are going to be talking about all things Core Web Vitals! Come join us live Dec 3 at 11am Eastern! #webperf cc @henrihelvetica.bsky.social www.youtube.com/live/dQqqOYA...

bsky.app/profile/perf... exists now in the world

Just cancel your Netflix subscription and stop buying avocados. You'll be fine

*cough* we have known this for years *cough*

So someone asked him for an example of racism that isn't hurtful or insulting, right?

Still loving Ghost of Yotei.

Out-of-order HTML patching, another proposal from TPAC, lets HTML be presented non-linearly, and a single file can update multiple parts of the page. Would this feature be useful to you?

If on LinkedIn and interested in how algorithms are suppressing female content on their platform, check this post out

So cloudflare is down and the down detector websites uses cloud flare recaptu to check I am human so I can't access the down detector on my phone.

New on the blog: I learned that Node.js includes a native method for marking other methods as deprecated. 🎉 www.stefanjudis.com/today-i-lear...

All Day Hey is a great conference in Leeds - let’s sell it out one last time!

We are in a black mirror episode aren't we.

Instant purchase, I loved attending all day hey and it smaller talk events when living in Leeds.

I once managed to get copilot to say Monday didn't end in a Y because I asked it to write a unit test to test which days of the week actually end in Y. It couldn't find a failing path so it decided to confidently be wrong.

Trevor Philips tries to get Zack Polanski to trip up on the issue of trans Polanski responds with a slam dunk, a home run, a touchdown - whatever your sports metaphor is 👏