Firefox Nightly for Developers
Firefox Nightly for Developers
Firefox Nightly for Developers
Everyone
Mozilla
Nightly is built for testers. Help us make Firefox the best browser it can be.


Average Rating

4.3


Number of Ratings

65,232


Number of Downloads

1M+


Contains Ads

False


In-App Purchases

False


Install Fee

Free


More Info

Details

About Firefox Nightly for Developers

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 ... read more

Permissions Required

Summary

Total Permissions

17

Total Categories

6

Highest Risk

8

Average Risk

5

Counts

2

8

7

0

Rating Details





User Reviews

Jordan Anderson Jordan Anderson
66
Saturday, June 21, 2025

I'm not entirely sure what happened with the design of the browser since the last update I had installed, but moving all the settings to a full-screen pop-up was not the right move. I used the quick-access navigation buttons often, and the small desktop-like pop-up for settings and extensions and the like from the corner were great. This feels like Mozilla are regressing in design. I chose Firefox because it's simple, customizable, and respects me as a consumer. I now question that choice.

Michael Clark Michael Clark
36
Friday, April 2, 2021

I love Firefox. I've used it since v1 on desktop. Since Firefox's rendering engine is the last holdout against the Chromium borg cube, I'm even more determined to stick with Firefox. The mobile redesign was launched poorly and I stopped using it for a while. But now that my favorite extensions are back in, I'm back with Firefox again. I like where the new clean design and focus on performance is going. One thing I miss a lot: copy image directly to clipboard.

A Google user A Google user
2
Friday, June 28, 2019

smoothest browser experience i've ever had. clean design, a thumb-level adress bar so pages extend to the upper bezel, better tab navigation and bookmark management. chrome barely competes. looking forward to add-on integration, a fix for the lockwise datastore backend error, and the ability to choose more alternative seach engines (startpage). Edited

A Google user A Google user
1
Friday, August 16, 2019

Gotta say this is pretty cool, and fast. The only thing I'm really missing is ad blocking. Could include that by default, allow outside adblock aps to do it (like adguard), or enable addon aupport. Update: Removed another star due to having to relog into Firefox sync every flippin time it updates... gets annoying fast. Yes i get this is a testing browser but sheesh... Edited

Abby S Abby S
20
Wednesday, June 4, 2025

It's a good app and I appreciate being able to use extensions on it. I've been having an issue lately where the app crashes (like, completely closes) whenever I hit the back button on my phone. The in-browser back button works, but I've never had to use it before and it's incredibly annoying to have to restart the app every time I accidentally hit the back button I've always used.

more reviews