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Philip Walton

@philipwalton.com

DevRel lead @ Google working on Chrome and the Web. I occasionally blog at: https://philipwalton.com

50 Posts1579 Follower221 Folgt
Barry Pollard@tunetheweb.com · 3w ago

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 🧵

New ad metrics in Chrome User Experience Report  |  Blog  |  Chrome for Developers

Learn about the new ad metrics now available in the Chrome User Experience Report (CrUX)

developer.chrome.com

Philip Walton@philipwalton.com · 3w ago

If you've ever tried using a new web API in TypeScript, you've probably hit this problem: An API exists. It works in your browser. But TypeScript has no types for it. The reason is a limitation that TS unfortunately applies to its built-in libs. BUT, I've created a relatively simple fix 👇

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Joey Arhar@josepharhar.bsky.social · 3mo ago

Hi! I'm working on a new HTML feature: filterable select There are two proposed API shapes so far: 1. Nesting <input> in <select> 2. Sibling <input> for listbox <select> w/id ref Option 1 is more ergonomic, but would break selects in older browsers Thoughts? (Both currently in Canary w/flag)

Bramus@bram.us · 3mo ago

Yeah, www.bram.us/2025/05/04/c... is the article Jakob's referring to. The post lists the difficulties (basically reiterating what @philipwalton.com said a decade ago), identifies the needs, and also explores a potential solution. I really wish we had something like it, for the better of the web.

Polyfilling CSS with CSS Parser Extensions

In April I attended #BlinkOn, the conference for web platform contributors in the Chromium open source project. At the conference I gave a presentation about “CSS Parser Extensions”, a wild idea I hav...

bram.us

rem / Remy Sharp @remysharp.com · 3mo ago

Along with the laundry list of CSS features I didn't know had been knocking around for the last few years, I've just found that private JS properties are "widely available" baseline…since 2021. Apparently I just get older and slower 🐌

Chrome for Developers@developer.chrome.com · 4mo ago

Solved: AI coding tools that hallucinate legacy web practices. Modern Web Guidance codifies decades of Chrome's platform expertise into your agents. Level up with guides for web best practices and new platform features, using Baseline data for cross-browser reliability → goo.gle/4on8BMS

Rick Viscomi@rviscomi.dev · 5mo ago

We've been COOKING Modern Web Guidance is a skill pack that helps your coding agent write better, faster, more accessible and secure code Get it at goo.gle/mwg We'd love to know what you think!

Modern Web Guidance  |  Chrome for Developers

Guidance on how to build for the modern web.

goo.gle

Chrome for Developers@developer.chrome.com · 5mo ago

Ensure your coding agents build modern, fast & secure apps by default → goo.gle/3PcqfGj We just announced Modern Web Guidance at #GoogleIO. It injects AI-ready skills and modern features—with Baseline Widely Available fallbacks—so your agent stays up to date 🧵

Lea Verou, PhD@lea.verou.me · 5mo ago

Thrilled this is out, keeping quiet has been SO HARD! 🤐 I’ve had the opportunity to contribute as a domain expert consultant over the past few months, and saw firsthand the level of thoughtfulness and care that went into it. Proud to have played a small part, and excited to see what folks build! ❤️

Chrome for Developers@developer.chrome.com · 5mo ago

Ensure your coding agents build modern, fast & secure apps by default → goo.gle/3PcqfGj We just announced Modern Web Guidance at #GoogleIO. It injects AI-ready skills and modern features—with Baseline Widely Available fallbacks—so your agent stays up to date 🧵

Sarah Drasner@sarahedo.bsky.social · 5mo ago

💥 Game changer for Web Development announced at GoogleIO- Modern Web Guidance! It’s expert-vetted skills for web development based on best practices of latest specs and APIs. It ensures your agent/coding harness doesn’t default to older and out of date patterns to build sites.

Philip Walton@philipwalton.com · 5mo ago

I'm going to be giving a talk that deep dives into Modern Web Guidance in 2 hours: bsky.app/profile/deve... You can find the talk details here: io.google/2026/explore...

Chrome for Developers@developer.chrome.com · 5mo ago

Ensure your coding agents build modern, fast & secure apps by default → goo.gle/3PcqfGj We just announced Modern Web Guidance at #GoogleIO. It injects AI-ready skills and modern features—with Baseline Widely Available fallbacks—so your agent stays up to date 🧵

Lea Verou, PhD@lea.verou.me · 5mo ago

🚨 What are some modern web platform (CSS, HTML, JS) features that you wish your AI agent utilized, but doesn't (or gets them wrong)? I’ll go first: - CSS: lh unit, trig functions, nesting - HTML: inert attribute - JS: Regex lookbehind, regex named groups, RegExp.escape(), Object.groupBy()

Rob Palmer@robpalmer.bsky.social · 8mo ago

TypeScript excitement 😉 Congrats to @jakebailey.dev on updating upstream tsc to default to an unpinned *latest* yearly edition of ES20xx. Heading for TS 6.0 🎉 This mean less transpilation of new JS features & more use of native language features provided by JS engines 👍 github.com/microsoft/Ty...

Default `target` to "latest standard", deprecate ES5 by jakebailey · Pull Request #63067 · microsoft/TypeScript

target now defaults to ScriptTarget.LatestStandard, which is an alias to the most recent standardized ES version, currently ES2024 (until we add ES2025). target=ES5 is now deprecated. #63066 got mo...

github.com

Jake Bailey@jakebailey.dev · 8mo ago

ES5 🫡👋

Una Kravets@una.im · 9mo ago

You know that annoying experience on mobile websites where you need to find the little close button and can't swipe a menu closed? The solution is simpler than you think. With basic CSS scroll APIs, you can get built-in interruptible swipe gestures 🥳

Stacy Kvernmo@stacykvernmo.com · 11mo ago

There are many goodies that are newly and widely available in Baseline. backdrop-filter is so much fun to work with and I am obsessed with AVIF images and the ability to animate from display: none with @starting-style. And how easy is it to lazy load images now? web.dev/articles/bas...

How to implement an image gallery using Baseline features  |  Articles  |  web.dev

Image galleries are a common user interface pattern on the web. Learn how to create one using Baseline features.

web.dev