What's new in Firefox Nightly for Developers 2.2.0

Thank you for testing Firefox Preview! This release includes new features, enhancements, and bug fixes:
- Decide to open links in a private tab by default
- Choose what type of browsing data to clear on demand or every time you exit the browser
- See “fill link from clipboard" on search engine screen for easier searches
- Enhancements to the user interface
- Fixed the text selection handler bug

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A more recent upload may be available below!

About Firefox Nightly for Developers 2.2.0

Firefox Nightly for Developers 2.2.0 screenshots (4)

Screenshots from version 151.0a1

Download Firefox Nightly for Developers 2.2.0

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
2.2.0 APK
12901946
October 21, 2019
armeabi-v7a
Android 5.0+
nodpi
2.2.0 APK
12901947
October 18, 2019
arm64-v8a
Android 5.0+
nodpi
2.2.0 APK
12901948
October 21, 2019
x86
Android 5.0+
nodpi
2.2.0 APK
12901949
October 21, 2019
x86_64
Android 5.0+
nodpi
All Releases

Version:151.0a1

Uploaded:April 8, 2026 at 11:58PM UTC

File size:59.06 MB

Downloads:723

Version:150.0a1

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

File size:58.14 MB

Downloads:1,299

Firefox Nightly for Developers 149.0a1

Version:149.0a1

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

File size:57.05 MB

Downloads:2,295

Firefox Nightly for Developers 148.0a1

Version:148.0a1

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

File size:56.34 MB

Downloads:1,399

Firefox Nightly for Developers 147.0a1

Version:147.0a1

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

File size:55.60 MB

Downloads:1,781

Firefox Nightly for Developers 146.0a1

Version:146.0a1

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

File size:58.28 MB

Downloads:2,201

Firefox Nightly for Developers 145.0a1

Version:145.0a1

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

File size:58.17 MB

Downloads:1,258

Firefox Nightly for Developers 144.0a1

Version:144.0a1

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

File size:56.07 MB

Downloads:1,312

Version:143.0a1

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

File size:55.76 MB

Downloads:1,179

Version:142.0a1

Uploaded:July 22, 2025 at 3:31AM UTC

File size:54.73 MB

Downloads:1,131

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