Firefox Nightly for Developers

4.3
55.9K reviews
1M+
Downloads
Content rating
Everyone
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About this app

Warning: Nightly is an unstable testing and development platform. By default, Firefox Nightly automatically sends data to Mozilla — and sometimes our partners — to help us handle problems and try ideas. Learn what is shared: https://www.mozilla.org/en-US/privacy/firefox/#pre-release

Firefox Nightly gets updated every day and is designed to showcase the more experimental builds of Firefox. The Nightly channel allows users to experience the newest Firefox innovations in an unstable environment and provide feedback on features and performance to help determine what makes the final release.

Found a bug? Report it at: https://bugzilla.mozilla.org/enter_bug.cgi?product=Fenix

Want to know more about the permissions Firefox requests?: https://mzl.la/Permissions

See our list of supported devices and latest minimum system requirements at: https://www.mozilla.org/firefox/mobile/platforms/

Mozilla marketing: In order to understand the performance of certain Mozilla marketing campaigns, Firefox sends data, including a Google advertising ID, IP address, timestamp, country, language/locale, operating system, app version, to our third party vendor. Learn more by reading our Privacy Notice here: https://www.mozilla.org/privacy/firefox/

Take a browse on the wild side. Be among the first to explore future releases.
Updated on
Jul 30, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, App activity and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.3
52.3K reviews
Molly Snyder
July 23, 2024
Firefox just updated and for some reason my navigation buttons are at the bottom even though I have the address bar set to the top. This is stupid. Now I have two bars taking up the screen any time I move back up. Why on earth would I want the address bar on top, but navigation buttons (refresh, forward, backward) on the bottom of the page??? I see no way to fix this mess. "Find in page" is totally ruined, now. The search bar goes away every time you hit the next or previous button. Why?!
52 people found this review helpful
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Ryan Geyer
July 27, 2024
I love firefox as a more privacy-friendly alternative to chrome which allows extensions. Just be warned that the nightly build is unstable. There have been multiple times where some update went out which started causing the browser to crash extremely frequently (currently dealing with that right now). I have been using nightly for access to upcoming features which haven't hit the main browser yet, but just remember that there are some painful tradeoffs that come with that.
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Paci Olson
July 13, 2024
It's otherwise a good browser, but if they could *please* let us put the navbar functions back in the overflow menu, I would appreciate it. Might just be me, but I do not like having UI elements unceremoniously relocated to other parts of my display, especially when it's without prior notification or consent. Even if it's just a customization toggle, it would be nice, as I don't want to have to switch back to normal Firefox to remove it and lose access to my custom extensions list.
25 people found this review helpful
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