Restolador Firefox Developer Edition

Welcome to your new favorite browser. Get the latest features, fast performance, and the development tools you need to build for the open web.

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Faster Performance

A Next-Generation CSS Engine

Firefox Quantum includes a new CSS engine, written in Rust, that has state-of-the-art innovations and is blazingly fast.

Design. Code. Test. Refine.

Build and Perfect your sites
with Firefox DevTools

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Feedback makes us better. Tell us how we can improve the browser and Developer tools.

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Help build the last independent browser. Write code, fix bugs, make add-ons, and more.

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