Official Firefox account for people who build on the web. Learn about the things we're working on to grow and improve the web platform.
Firefox for Web Developers
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Ever struggled to get heading tags right in includes/components? headingoffset could be the answer…
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Firefox for Web Developers
We're experimenting with a way to visualize session history in Firefox DevTools, and we'd love your feedback!
Here's the background, and how to try it: blog.farre.se/posts/2026/0...
The Web Serial API landed in Firefox 151, allowing you to connect directly to microcontrollers, dev boards, 3D printers, power meters, and other serial-connected hardware from the web. Here's how it works:
See our announcement post for more detail, demos, and docs hacks.mozilla.org/2026/05/web-...
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Firefox for Web Developers
Firefox for Web Developers
Support for Web Serial in Firefox 151 for Desktop Firefox can now connect directly to microcontrollers, development boards, 3D printers, power meters, and other serial-connected hardware from the…
