Ryan Townsend

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...

So happy to share mine & @nicj.net's first @cloudflare.social blog post—during our 16th Birthday Week no less! 🥳 Today we announce BEACON, a #webperf research dataset we're contributing to the @rumarchive.com community. blog.cloudflare.com/how-fast-is-...

I've proposed "progressive image rendering" as a focus area for Interop 2027, so we can get progressive JPEG XL support in Safari, and progressive AVIF support in both Safari and Firefox. github.com/web-platform...

📢 Lot's of updates in our new Edge for devs issue: OpaqueRange, referenceTarget, window-drag, <install>, WebMCP, and more!

We just finished the beta of our website. Look out for updates on Viewport soon! You can sign up to our mailing list to be kept in the loop. viewportconf.org

Jeremy's whole post is worth a read, and I would underline + bold the last point: the web is the superior choice for privacy and security, and it's anti-web *and anti-user* to be preferencing native app install affordances: adactio.com/journal/22757

We just launched experimental ad metrics in the Chrome User Experience Report (CrUX): - Ad Count - Ad Density - Ad Weight: Network - Ad Weight: CPU These metrics are a set of ad-related measurements that provide transparency into sites' ad experiences. developer.chrome.com/blog/crux-ad... 1/8 🧵

I can't attend in person, but NY folk should! Sufian is a talented engineer who I'm lucky to call one of my colleagues.

Interop 2027 prep is now. Want to help? 1. Go to developer-signals.rviscomi.workers.dev 2. Sign-in using GitHub 3. Find features you need 4. Click the comment icon, add your use case 5. Submit There aren't many ways to tell browsers what you need and why you need them. That's a very effective one.

So, submit your own proposal or give a 👍 to already listed/proposed features you'd like to see supported across browsers. Starting with LoAF when unsure where to start upvoting 😜 github.com/web-platform... RUM tools, developers and ultimately site visitors will all benefit! 3/3

Can 2027 be the year we finally get all the Core Web Vitals in all browsers? 🙏 Work your magic folks: github.com/web-platform... #webperf

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 👏🏻

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

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...

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

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!!

This number is now <43 😉

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

@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

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 👏🏻👏🏻👏🏻

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.

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

“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.

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...

Got my first (albeit a very minor change) Cloudflare RUM release out to production 🎉 developers.cloudflare.com/changelog/po...