In 2025, we systematically collected compat data for 28 browser releases: Firefox 135 - 147 Chrome 133 - 144 Safari 18.4, 26, 26.2 We're keeping your compat tables up-to-date.

🧩 Your supply chain is only as strong as its weakest dependency. From securing build tools to verifying external scripts, this new MDN guide by @openwebdocs.org walks you through steps to protect your projects from supply chain attacks. Read the guide 👇 developer.mozilla.org/en-US/docs/...

We've written a new guide on JavaScript Prototype Pollution and how to defend against it. developer.mozilla.org/en-US/docs/W... Many thanks to @joshcena.com , Aaron Shim, and Maurice Dauer for your help and feedback! #websecurity

We've written a new guide on Supply Chain Attacks: developer.mozilla.org/en-US/docs/W... Many thanks to the W3C SWAG CG and @jordan.har.band for the reviews and feedback! #websecurity

We're happy to share that @sovereign.tech invests in Web Security and Privacy Documentation! Over the coming year, Open Web Docs will be working on creating and updating Security and Privacy docs for web developers on @developer.mozilla.org. Full announcement: openwebdocs.org/content/post...

Every month I support: @lolaslab.bsky.social @openwebdocs.org @11ty.dev @piccalil.li Because they all do great things for the web and make it a better place to work. You should consider helping out too, especially @lolaodelola.bsky.social

Open Web Docs do extremely important work in maintaining open source web documentation and data sets, if you’re a web developer you’ve likely used a resource they maintain.

Does your organization rely on MDN for reference docs? Do you often check browser compat on MDN or caniuse.com? Do you use tools like browser DevTools or VSCode in your work? If so, you rely directly on the work that Open Web Docs does and should consider sponsoring. To convince your boss.

🎙️New Episode of Igalia Chats: All About Open Web Docs @meyerweb.com and @bkardell.com chat with @estelle.bsky.social & Will Bamberg of @openwebdocs.org www.igalia.com/chats/owd

Launching the W3C Docs Community Group openwebdocs.org/content/post...

Thank you @igalia.com for renewing your Open Web Docs membership and sponsoring us again in 2025! 💜 Igalia has been sponsoring OWD for the 5th time already! Sustainable funding allows us to maintain documentation in the long-term.

Featured posts this week: ⚡ New tools for a better UX: @catchpointsystems.bsky.social ⚡ Bloomberg Backs Open Web Docs: @bloomberglp.bsky.social & @openwebdocs.org ⚡ Why Do Tech #SEO and #WebPerf Matter: @techseovitals.com ⚡ Web Perf Guide: @developer.mozilla.org Special thanks to the authors.🙏

Thank you @dotmh.dev for becoming a monthly OWD supporter on our GitHub Sponsors! 💜 github.com/sponsors/ope...

Bloomberg is now sponsoring @openwebdocs.org ! www.bloomberg.com/company/stor...

We're happy to announce that Bloomberg joins Open Web Docs! openwebdocs.org/content/post...

(BCD is critical infrastructure for the web - used in all kinds of tools and open source projects and by loads of businesses. donate to @openwebdocs.org to support this key resource.)

visualizing the surface-area growth rate of the web platform based on Browser Compat Data (BCD) data set from @openwebdocs.org. not be 100% correct yet, but the gist is right. need to clean it up then will post the source generator + data.

Let’s make some docs together! Our #FOSDEM kicks off in the Tool the Docs room with @ddbeck.com!

Amazing, hard-working, kind people who truly care about the open web!! 😍 @openwebdocs.org - Impact and Transparency Report 2024 openwebdocs.org/content/repo...

Open Web Docs 2024 Report We're reflecting on our fourth year of ensuring the long-term health of web platform documentation openwebdocs.org/content/repo...

Find us at #FOSDEM 2025 this weekend! @florianscholz.com and @torgo.com will be in Brussels and are happy to chat about OWD! Saturday: Tool the Docs room: fosdem.org/2025/schedul... Sunday: Funding the FOSS Ecosystem room: fosdem.org/2025/schedul...

Learn about XSS for XMAS! We created a new MDN page about Cross-site scripting: developer.mozilla.org/en-US/docs/W...