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About Firefox Nightly for Developers 1.0.1920
Welcome to a sneak peek of our new mobile browser.
We know a little something about making game-changing web browsers. That’s why we’re excited to give you early access to Firefox Preview, a sneak peek of our new mobile browser. Built on GeckoView, this is our fastest Android browser yet. We’ve turned up the volume on everything you expect from Firefox: ease of use, safety, choice, control and privacy.
Download Firefox Nightly for Developers 1.0.1920
This release comes in several variants (we currently have 3). Consult our handy FAQ to see which download is right for you.
Version:153.0a1
Uploaded:May 31, 2026 at 3:05AM UTC
File size:65.26 MB
Downloads:554
Version:152.0a1
Uploaded:May 18, 2026 at 2:18PM UTC
File size:62.75 MB
Downloads:1,298
Version:151.0a1
Uploaded:April 20, 2026 at 1:22PM UTC
File size:59.06 MB
Downloads:1,570
Version:150.0a1
Uploaded:March 23, 2026 at 11:36AM UTC
File size:58.14 MB
Downloads:1,332
Version:149.0a1
Uploaded:February 23, 2026 at 1:04PM UTC
File size:57.05 MB
Downloads:2,380
Version:148.0a1
Uploaded:January 12, 2026 at 2:44PM UTC
File size:56.34 MB
Downloads:1,420
Version:147.0a1
Uploaded:December 8, 2025 at 1:51PM UTC
File size:55.60 MB
Downloads:1,803
Version:146.0a1
Uploaded:November 10, 2025 at 2:18PM UTC
File size:58.28 MB
Downloads:2,209
Version:145.0a1
Uploaded:October 13, 2025 at 8:09AM UTC
File size:58.17 MB
Downloads:1,309
Version:144.0a1
Uploaded:September 14, 2025 at 5:33PM UTC
File size:56.07 MB
Downloads:1,417
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