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The Text Fragments creation UI was just activated in Firefox Nightly allowing you to share/reference a link anchor to any text snippet in a page bugzilla.mozilla.org/1970641

In our last community call, Yash Raj Bharti gave amazing demos on what's new in CSS! 🎨 In this video, he goes through the new view-transition that can help you gain full visual control over what changes, and without JavaScript elements. Read more 👇 developer.mozilla.org/en-US/docs/Web…

📚 The MDN Curriculum is your guide to mastering front-end development! Covering all the fundamentals, it links to the best resources, including those from our learning partner, Scrimba. 🤝 Explore now 👇 developer.mozilla.org/en-US/curricul…

Firefox 141 Beta 8 is out with 14 bug fixes bugzilla.mozilla.org/buglist.cgi?bu…

Did you know about Strict Mode? 🤔 ✨ "use strict"; ✨ Strict Mode catches silent errors, making your code more predictable and easier to debug. It also improves performance and helps you write more secure JavaScript code. See how 👇 developer.mozilla.org/en-US/docs/Web…

Using custom accordions? There's an easier way! 🪗 The <details> element now has a name attribute with support across all major browsers. ✨ No more custom handling for UI accordions ✨ Less code to maintain ✨ Native browser support Try now 👇 developer.mozilla.org/en-US/blog/htm…

✅ Newly Available: CookieChangeEvent It lets you respond to cookie changes as they happen, using modern event-driven logic in your app or service worker. The event is fired when cookies are added, changed, or deleted. Try now 👇 developer.mozilla.org/en-US/docs/Web…

🔍 Want to highlight text without touching the DOM? The CSS.highlights API lets you apply custom visual highlights to text ranges using JavaScript + CSS. ❇️ Great for annotations, search results, or reading aids. Check it out 👇 developer.mozilla.org/en-US/docs/Web…

Working with <dialog> elements? 🤔 Don't use .close(), it ends the dialog immediately. Use HTMLDialogElement.requestClose(), it fires a close event first, giving your app a chance to intercept it, useful for confirmation or animations. Try now 👇 developer.mozilla.org/en-US/docs/Web…

Building extensions with Mozilla Add-ons? Try tabGroups API 📑 The tabGroups API lets you interact with tab groups, giving users better control over their open tabs through your extension. What's possible? - Tab managers - Declutter browsers - Smarter workflows developer.mozilla.org/en-US/docs/Moz…

Newly Available starting Firefox 140 ✅ 🍪 CookieStore API offers a modern, promise-based way to read, write, update, and delete cookies, all without parsing strings manually. It brings, ✅ Async operations ✅ Structured data ✅ Service worker support 👇 developer.mozilla.org/en-US/docs/Web…

🚀 The #StateOfHTML 2025 survey is now open! ➡️ Take it now: survey.devographics.com/en-US/survey/s… 💡 Spending time to fill these out is an investment into your craft, as browsers use the results to make prioritization decisions. You don't have to do it in one sitting (or even one device).

No more padding hacks 🖼️ The aspect-ratio property lets you define a fixed width-to-height ratio for any element, making responsive design easier than ever. 🎥 Great for responsive media 🎴 Cleaner layouts w/o JS 📦 Works with grid, flexbox Read more ↓ developer.mozilla.org/en-US/docs/Web…

Master DOM! 🖥️ Manipulating the DOM allows you to programmatically modify HTML elements, styles, and attributes. The DOM represents the structure of your web page as a tree of objects. Use JS to select, modify, add, or remove elements. Learn how 👇 developer.mozilla.org/en-US/docs/Lea…

🦊 Freshly released Firefox 141 comes with a few WebDriver updates. Setup a proxy for a container with browser.createUserContext, monitor history API usage with browsingContext.historyUpdated. And also a few changes around Cookies. Read more at fxdx.dev/firefox-webdri… 🚀

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Congrats to ⁦MDN Web Docs⁩ Celebrating 20 years of MDN | MDN Blog developer.mozilla.org/en-US/blog/mdn…

MDN turned 20, and to celebrate, the Chrome team sent us a cake! 🎂 🧁 More than dessert, it’s about open standards. We still remember the cakes from Microsoft during Firefox 2, 3, and 4… and the one we sent them for IE10! Here's ours 👇

Don’t fear the terminal, embrace it! 🫂 Get comfortable with the command line and learn, ✅ How to open your terminal ✅ Common commands like cd, ls, and mkdir ✅ How to create, move, and delete files and folders Get the cheat sheet! 👇 developer.mozilla.org/en-US/docs/Lea…