#webPerf
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astro.build
elegance. luxury. astro.
5.0 coming soon...
A perfume bottle, labelled No.5. Astro. npm. Eau de webperf
December 3, 2024 at 6:54 AM
zeu.dev
Eau de WebPerf 😚🤌✨
astro.build Astro @astro.build · Dec 3
elegance. luxury. astro.
5.0 coming soon...
A perfume bottle, labelled No.5. Astro. npm. Eau de webperf
December 3, 2024 at 7:01 AM
anniesullie.com
So honored to be part of Speed Curve's #webperf hero series!
tammyeverts.com Tammy Everts 🍁 @tammyeverts.com · Jan 21
Let's celebrate our first #webperf hero of 2025: @anniesullie.com!

@cliffcrocker.bsky.social caught up with Annie to talk about big wins in 2024, what she and her Speed Metrics team are working on now, and what she sees as the biggest challenge in front of us.

www.speedcurve.com/blog/perform...
SpeedCurve | Performance Hero: Annie Sullivan
Celebrating everything that performance hero Annie Sullivan has done, and continues to do, for the web performance community!
www.speedcurve.com
January 21, 2025 at 10:28 PM
stoyan.me
Who takes the best notes at #perfnow This fella! @mcmillanstu.bsky.social Read them here: stuart-mcmillan.com/blog/webperf...
November 16, 2024 at 11:44 PM
nucliweb.net
Huge thanks to @andydavies.me for mentioning the LoAF Helpers WebPerf Snippet at @perfnow.nl!

Honored to be part of the amazing Web Performance community 🫶

🔗 webperf-snippets.nucliweb.net/Interaction/...

#WebPerf #PerfNow #Performance #LoAF #INP #CoreWebVitals
A speaker stands on stage at the Performance.now() 2025 conference, presenting a slide titled “LoAF Helpers: Advanced Debugging in DevTools.” The slide displays details about WebPerf Snippets and a highlighted URL link. The audience is seated in front of the stage, watching the presentation.
October 31, 2025 at 10:21 AM
tunetheweb.com
“Added preview support for Event Timing API (Interaction to Next Paint)”

#webperf #CoreWebVitals
October 2, 2025 at 11:23 PM
nucliweb.net
🚀 WebPerf Snippets – Major Update

✨ What’s new
• Visual ratings 🟢/🟡/🔴
• Clean tables report
• Automatic summaries
• Issue detection with actionable recommendations
• Improved docs with causes, fixes & official links

👉 webperf-snippets.nucliweb.net

#WebPerf #CoreWebVitals #JavaScript #DevTools
WebPerf Snippets | WebPerf Snippets
A curated list of snippets to get Web Performance metrics to use in the browser console or as snippets on Chrome DevTools by Joan León
webperf-snippets.nucliweb.net
January 2, 2026 at 7:56 AM
twnsnd.com
Safari TP 230 includes support for Largest Contentful Paint 🙌 #webperf
October 15, 2025 at 9:27 PM
riccardomargiotta.co.uk
All 17 performance mistakes:

@paulcalvano.bsky.social #webperf #PerfNow
November 14, 2024 at 12:17 PM
nucliweb.net
I've been updating WebPerf Snippets for Chrome DevTools, and this weekend brought 10 new tools for diagnosing web performance directly from the console.

New snippets in webperf-snippets: 🧵

#WebPerf #WebPerformance #ChromeDevTools #CoreWebVitals #JavaScript #WebDev
February 22, 2026 at 11:01 AM
twnsnd.com
This is huge for CSS loading performance.

Compression dictionaries are a little tricky to deploy today but totally worth the effort as the impact is enormous.

#webperf
stoyan.me Stoyan Stefanov @stoyan.me · Dec 13
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-...
How to load CSS (fast)
Loading styles on the web is something that looks trivial at first. You just add a <link rel=stylesheet> to your page (or <style> for inline styles) and you're done. But if you wanted to load CSS fas...
calendar.perfplanet.com
December 13, 2025 at 2:32 PM
firefoxperformance.bsky.social
Next up is @andydavies.me helping us to make sense of the Long Animation Frames API. fosdem.org/2025/schedul... #webperf #fosdem
February 1, 2025 at 2:58 PM
jec.fish
Performance you say? Join Captain Speedy to learn how to pinpoint & fix performance issues with cool insights in #ChromeDevTools. Let’s dive in! 📺 youtu.be/7A70hBrPL4I

@tunetheweb.com #DevToolsTips #webperf
December 6, 2024 at 7:47 AM
guaca.bsky.social
Already working on an article for this year's #webperf Advent Calendar 🤩
November 22, 2024 at 5:47 PM
arielsalminen.com
Hei all new followers! 👋🏻 I’m Arielle and into #DesignSystems, #Design, #WebComponents, #WebStandards, #WebPerf, #a11y, #IndieWeb, #Inclusion, #Typography, #Frontend and more…! There may be (lots?) of shitposting as well. Delighted to meet you 🩷🌸🏳️‍🌈
November 16, 2024 at 9:08 AM
twnsnd.com
An exciting new timing API from the Bloomberg team: github.com/bloomberg/co... 🎉

#perfnow #webperf
Jason Williams introducing Container Timing on stage
November 15, 2024 at 2:32 PM
nucliweb.net
"0 kB of JavaScript is not a feature" - @rich-harris.dev

#perfnow #WebPerf
A speaker is presenting at the performance.now() 2025 conference in front of an audience. The slide behind them reads “0 kB of JavaScript is not a feature,” with the second line highlighted in red.
October 31, 2025 at 4:58 PM
anniesullie.com
Hey everyone! I ended my #perfnow talk by asking you all to consider contributing to the broader #webperf community.

And one project I called out was e18e.dev. They're trying to connect together people working on JS packages performance (example below). Please consider joining their discord!
shilman.net Michael Shilman @shilman.net · Oct 27
We're fixing Storybook bloat, one dependency at a time! 🔪 @storybookjs.bsky.social
Storybook package dependency graphs for v8.2 (L), v8.3 (M), v8.4 (S)
November 19, 2024 at 8:54 PM
tammyeverts.com
If you're new to Bluesky and/or web performance, the wonderful @sia.codes has created an excellent starter pack of front-end #webperf folks to follow.

bsky.app/starter-pack...
November 20, 2024 at 10:23 PM
tammyeverts.com
Interesting! Etsy implemented speculation rules and got these results:

👍 Time to First Byte on the listing page improved 23.6%
👍 First Contentful Paint improved 20.7%
👍 Largest Contentful Paint improved 21.1%
👍 DOMContentLoaded improved 20.4%

#PerfNow #webperf

www.etsy.com/codeascraft/...
www.etsy.com
October 31, 2025 at 2:32 PM
nucliweb.net
speedscope
🔬 A fast, interactive web-based viewer for performance profiles.

github.com/jlfwong/spee...

#WebPerf #PerfTools #Performance
January 23, 2025 at 4:06 PM
nucliweb.net
I’m starting the year by migrating the webperf-snippets.nucliweb.net project to the latest versions.

I’m also improving the documentation and scripts, with better console output.

Keep an eye out for upcoming updates

#WebPerf #WebPerfSnippets #PerfTools #Performance #DevTools
January 1, 2026 at 10:48 AM
stuart-mcmillan.com
This talk on fonts is all kinds of awesome, so much optimisation available that I have been ignoring. Thanks @mandymichael.bsky.social My notes are here stuart-mcmillan.com/blog/webperf... (really should add anchors) @perfnow.bsky.social #perfnow #webperf
November 15, 2024 at 11:01 AM
nucliweb.net
All runnable directly in the browser console.

webperf-snippets.nucliweb.net

📝 Leave a comment if you would like to see any of them in action.

#WebPerf #WebPerformance #ChromeDevTools #CoreWebVitals #JavaScript #WebDev
WebPerf Snippets | WebPerf Snippets
A curated list of snippets to get Web Performance metrics to use in the browser console or as snippets on Chrome DevTools by Joan León
webperf-snippets.nucliweb.net
February 22, 2026 at 11:01 AM
nucliweb.net
My gist “How Browsers Work” has been updated with a new post: “How modern browsers work” by @addyosmani.bsky.social

gist.github.com/nucliweb/c16...

#WebPerf #Browser #WebDevelopment
How Browsers Work
How Browsers Work. GitHub Gist: instantly share code, notes, and snippets.
gist.github.com
November 7, 2025 at 11:14 AM