Code snippet demonstrating the use of `self.crypto.randomUUID()` for generating a UUID in JavaScript, with a sample output shown.
Generate cryptographically secure UUIDs in the browser 🔐
`crypto.randomUUID()` is built into the Web Crypto API, no npm package needed.
Works in all modern browsers and Node.js 14.17+.
Learn more 👇
developer.mozilla.org/en-US/docs/...
@scope code explanation
Stop fighting specificity wars🛡️
The @scope at-rule is Baseline Newly Available and gives you granular control over where your styles apply. Define your root, set your limits, and keep your CSS clean → goo.gle/4aO0vbw
You can throw away innerHTML and replace it with the new setHTML(), which has a built-in sanitizer. Here's how it works:
Interop Dashboard
Interop 2026 is here → goo.gle/4tujOxz
This year focuses on improving interoperability for high-priority features like CSS anchor positioning, container style queries, and scroll-driven animations to ensure a more reliable experience across all rendering engines.
I love how @npmx.dev brought the whole community together to solve a problem we're all having. We need more of that.
I'll share a link to upvote the feature once it's ready
If the feature you’re looking at on Can I Use doesn’t have the little developer signal 👍 icon, let me know. We’re probably missing it in the backing data.
The @e18e.dev project, which systematically speeds up the Node.js ecosystem, has published its 2025 results.
Invisible heroes who make life better for all of us. They need our support.
e18e.dev/blog/the-yea...
Yes and yes - super helpful to share any links to existing developer-facing articles or demos, and copy/pasting the description from somewhere else is totally fine 🙏
Ah it looks like this isn't being tracked in the web-features repo. Could you file a FR?
github.com/web-platform...
Once it's in there, it should be open for upvotes and searchable on webstatus
(Aside: confusingly this is NOT css.types.filter-function!)
I made a Chrome Extension that allows you to debug #passkeys called WebAuthn DevTools.
blog.agektmr.com/en/2026/01/w...
Very well deserved! I'm glad we're able to support all the great work you do for the health of the web.
The @e18e.dev community does amazing work to speed up and modernize the web
Now's as good a time as ever to join and contribute to this hugely impactful project!
The CSS highlight API feels of little use to me vs it's complexity, so I'm probably unaware of some important use-cases. If it's a feature that's important to you, tell us why, here: github.com/web-platform...
React <ViewTransition> - Supported in all browsers 🥳
React implements this feature with startViewTransition({update, types}), and doesn't animate without it.
This API just landed in Firefox 147, the last remaining browser 👌
Just tested, and it seems to work fine
Photo of a boy's hand interacting with a drawing app on a tablet
Antigravity one-shotted this drawing web app for my kid in under a minute. No app store, no ads.
Me holding two Emmys I didn't win
I too take pictures with awards I did not win
It certainly is, enjoy!
🫶
Another year in the books! 🎉 Congrats to the entire Web Almanac team.
I know all too well how much time and effort goes into putting this together, but it continues to be an invaluable resource cited across the industry
Thank you to all the contributors almanac.httparchive.org/en/2025/cont... ❤️
Screenshot of caniuse.com, with a green highlight around the settings button.
Did you know it’s surprisingly easy to see which web platform features users browsers support?
1. Visit caniuse.com
2. Settings ⇢ Add from Analytics ⇢ Google Analytics or Simple Analytics
Can I use shows percentage support based on your site’s audience.
Build using data, not outdated ideas.
Screenshot of features in the developer-signals repo, sorted by the number of upvotes
Which features are web developers most excited about, going into 2026?
🏆 github.com/web-platform...
The developer-signals repo collects upvotes and comments on features that are not yet available across major browsers, and there are a few clear favorites...
doing everything without JS again and it's so nice that invoker commands, popover and CSS anchor positioning exists now
It shows! Thank you Patrick for all that you do for the web.
TIL: Compression Dictionary Transport 💡
A new HTTP feature that can dramatically shrink the size of your responses, especially when serving content that changes often but includes a lot of repeated structure (think: JSON, JS, CSS).
Learn more 👇
developer.mozilla.org/en-US/docs/...
MDN is more than just a resource. It's a community of developers, contributors, and learners passionate about web development.
Contribute to,
📚 MDN documentation
🤝 Help other devs
💟 Localize content
📝 Review or write on MDN
Start now 👇
developer.mozilla.org/en-US/commu...
November 2025 Baseline monthly digest
November's Baseline digest is here with big news for Next.js users → goo.gle/4q4jrXJ
We're covering the framework's move to Baseline support, new case studies from Target and Cybozu, and a wave of widely available color features.
🆕 The URL Pattern API is Newly Available!
Use it to match and extract parts of URLs, no need to reinvent routing logic. Supports literals, wildcards, named groups, and even regex constraints.
Learn how it works 👇
developer.mozilla.org/en-US/docs/...
HTML invoker commands are newly baseline! Here's how they work…
