What's new in Firefox Nightly for Developers 1.0.0

Thank you for trying out Firefox Preview, an experimental browser for Android. We’re already preparing updates, fixes, and new features that we’ll release throughout the year. We hope you'll let us know what you do and don't like, and how we can make this a browser you'll use every day.

You may encounter some issues with this release of Firefox Preview. Share feedback via email firefox-preview-feedback@mozilla.com or file a bug on GitHub: bit.ly/2GCr8Ai

Scroll to available downloads
A more recent upload may be available below!

About Firefox Nightly for Developers 1.0.0

Firefox Nightly for Developers 1.0.0 screenshots (4)

Screenshots from version 152.0a1

Download Firefox Nightly for Developers 1.0.0

This release comes in several variants (we currently have 4). Consult our handy FAQ to see which download is right for you.

Variant
Arch
Version
DPI
1.0.0 APK
11721514
June 27, 2019
armeabi-v7a
Android 5.0+
nodpi
1.0.0 APK
11721515
June 27, 2019
arm64-v8a
Android 5.0+
nodpi
1.0.0 APK
11721516
June 27, 2019
x86
Android 5.0+
nodpi
1.0.0 APK
11721517
June 27, 2019
x86_64
Android 5.0+
nodpi
All Releases

Version:152.0a1

Uploaded:May 2, 2026 at 2:01PM UTC

File size:62.75 MB

Downloads:489

Version:151.0a1

Uploaded:April 20, 2026 at 1:22PM UTC

File size:59.06 MB

Downloads:1,546

Version:150.0a1

Uploaded:March 23, 2026 at 11:36AM UTC

File size:58.14 MB

Downloads:1,328

Firefox Nightly for Developers 149.0a1

Version:149.0a1

Uploaded:February 23, 2026 at 1:04PM UTC

File size:57.05 MB

Downloads:2,331

Firefox Nightly for Developers 148.0a1

Version:148.0a1

Uploaded:January 12, 2026 at 2:44PM UTC

File size:56.34 MB

Downloads:1,408

Firefox Nightly for Developers 147.0a1

Version:147.0a1

Uploaded:December 8, 2025 at 1:51PM UTC

File size:55.60 MB

Downloads:1,790

Firefox Nightly for Developers 146.0a1

Version:146.0a1

Uploaded:November 10, 2025 at 2:18PM UTC

File size:58.28 MB

Downloads:2,202

Firefox Nightly for Developers 145.0a1

Version:145.0a1

Uploaded:October 13, 2025 at 8:09AM UTC

File size:58.17 MB

Downloads:1,293

Firefox Nightly for Developers 144.0a1

Version:144.0a1

Uploaded:September 14, 2025 at 5:33PM UTC

File size:56.07 MB

Downloads:1,351

Version:143.0a1

Uploaded:August 18, 2025 at 9:16PM UTC

File size:55.76 MB

Downloads:1,201

Comments