Using the @e18e.dev MCP server has been pretty fun. "Check the dependencies for any redundant ones", and it does a pretty good job! We can improve it but it's a great start 🎉 Big thanks to @paolo.ricciuti.me being the resident ai guy 😄

If you're dealing with SVG icons you probably know the pain of overwriting colors. There's a new spec in the making that allows controlling CSS variables from "the outside". And it's shipping in Firefox already! https://drafts.csswg.org...

Amazing resource for anyone trying to understand performance profiles 👏🏻

Joan León@nucliweb.net · 2w ago

In my audits, reading the Performance profile is where people get stuck: the flame chart and waterfall look like noise at first I built an interactive guide to make them click, every figure is interactive, plus LCP, CLS, INP and the Insights panel perf.reviews/profile-guide #WebPerf #DevTools

If you work in frontend or on browsers, @lea.verou.me's post on polyfills is worth your time: lea.verou.me/blog/2026/po... /via @gregwhitworth.bsky.social

In defense of polyfills • Lea Verou

A highly influential spec editor expressed the opinion that polyfilling is harmful. I beg to differ.

lea.verou.me

Cloudflare Real User Monitoring (aka Web Analytics) is the # analytics tool of 2025—with installs on 1.5% of all websites!—according to w3techs.com/blog/entry/w... Reminder you can use this completely for free, even if you don’t use Cloudflare as your CDN!

The unsung heroes of our time. @43081j.com from the @e18e.dev community cut 1 MB from caniuse-lite. With 700M installs per month, that saves around 700 TB of global internet traffic every month. github.com/browserslist...

Huge improvement to Cloudflare just dropped: you can now cache worker responses 🎉 🎉 🎉 blog.cloudflare.com/workers-cache/ #webperf

Your Worker can now have its own cache in front of it

We are launching Workers Cache, a regionally tiered cache that sits directly in front of your Worker entrypoints. Infinitely composable, configured via standard HTTP headers

blog.cloudflare.com

Thank god I don’t have to keep this quiet any longer! Looking forward to having you onboard @philhawksworth.dev! 🎉

Phil Hawksworth@philhawksworth.dev · last mo.

I start my new job in a week.

I've just hit publish on the photos and videos for the last conference in May. It's wonderful to reflect now a few months have passed on what an amazing day it was. I'll look back at the years we ran All Day Hey! with incredibly fond memories.

What’s the daily recommended intake of Calipos for an adult male? Asking for a friend.

It's happening... We've asked Chromium API owners for permission to ship The Soft Navigation work to allow measuring of Core Web Vitals for SPAs!!

IntentToShip@intenttoship.dev · last mo.

Blink: Intent to Ship: PerformanceSoftNavigation and InteractionContentfulPaint performance entry

This number is now <43 😉

London Web Standards@londonwebstandards.org · last mo.

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/#:~:...

Hey! Look at that! <img sizes=auto> in Safari 27! webkit.org/blog/17967/n...

News from WWDC26: WebKit in Safari 27 beta

Safari 27 beta is here.

webkit.org

@bram.us are there any plans to make the "positioning an between two anchors, allowing for crossing either axis" any cleaner? (basically your demo from SotB youtu.be/VD_q3x9GnZs?...) I've just had a need to do this and while it works... I'm not proud of this committing this code.

We definitely need more image codecs, right? Apple have been working on a machine-learning-based image codec with some impressive stats: apple.github.io/ml-pico/ #webperf

beating our blues by watching this amazing aftermovie youtu.be/EmNVwmB7k90

Aftermovie JSHeroes 2026

YouTube video by JSHeroes

youtu.be

Still not over how wonderful @jsheroes.io was. 💯 post-conference blues. I’ve been fortunate enough to speak at over 20 conferences now and this was in a league of its own. So many new friends made, attendees, speakers, organisers and volunteers alike ❤️ Well done @alexmoldovan.dev and crew 👏🏻👏🏻👏🏻

JSHeroes@jsheroes.io · 3mo ago

Talks may be over, but the community moments continued at our traditional speakers picnic. 🐻 🚀 #JSHeroes #JScommunity #tech #const #papanași #latteart

Get your tickets to @perfnow.nl before prices rise on July 1st! I say this every year and I will continue to say it: there is nowhere better to learn about #webperf 🚀 The speaker line-up is always absolute gold and the hallway track is just as valuable.

performance.now() conference@perfnow.nl · 3mo ago

Ticket sales are open! perfnow.nl/tickets.html

I took a picture of @jeremias.codes taking a picture of @danielroe.dev taking a picture of his flat white.

jeremAIas@jeremias.codes · 3mo ago

I took a picture of Daniel taking a picture of his flat white.

🚨 if you want to follow the amazing speakers/mcs from this year then may i submit this starter pack for your consideration? it has been such a pleasure to listen and learn from them all ❤️❤️❤️ thank you especially to the team at @jsheroes.io for making this incredible conference 🙏

Besides key dates from our latest newsletter, we also want to let you know (OR SHOUT ABOUT) that our CFP is now officially open: ffconf.org/cfp Please help spread the word (re-post). @remysharp.com always carefully curates the event, whilst always finding new and interesting ideas from your CFPs.

FFConf Call for Papers

FFConf is accepting talk proposals. Submissions are reviewed continuously; speakers receive travel & accommodation.

ffconf.org

“We’re going to animate the living shit out of this” — this phrase will now live in my head rent free forever. @cydstumpel.nl @jsheroes.io

Pausing, slowing down and inspecting view-transitions in the DOM within DevTools is an absolute super power 👏🏻 @cydstumpel.nl @jsheroes.io

@cydstumpel.nl is giving me so much slide design AND website design jealousy @jsheroes.io 😍

Romania really pulled out all the stops on the weather for @jsheroes.io 😍

Is it the wine talking, or does anyone else recall that sites early to adopting HTTP/2 websites *felt* different to those stuck on 1.1? We had no Core Web Vitals back then, but I swear I could sense that vertical waterfall before even opening DevTools.

I’ll just leave this here for now. viewportconf.org #web #conference

End of an era 😭 #alldayhey

“It's just an otter nightmare” 🦦 iMessage’s voice note transcripts bringing joy to my day.

We switched Speculation Rules on Shopify storefronts from conservative to moderate eagerness. Here's how that went: performance.shopify.com/blogs/blog/f...

Faster storefront navigations with moderate speculation rules

We upgraded Speculation Rules to moderate eagerness on all Liquid storefronts. Desktop navigations are now 285ms faster at the median, with near-zero TTFB.

performance.shopify.com