Timeline
The road of releases.
32 releases, newest first. Each point links to the full changelog.
- Nightly 153.0a1 UnreleasedFirefox Nightly 153.0a1
6 new features, 14 other changes. Highlight: Starting with Firefox 152, Nightly builds have an in-memory cache for the JavaScript compilation result, which is shared across navigatio…
20 changes
- Beta 152.0b5 UnreleasedFirefox 152.0 Beta
7 new features, 5 fixes, 10 other changes. Highlight: Improved support for more advanced cursor movement commands, including those relating to paragraph boundaries, on macOS.
22 changes
- Stable 151.0 May 19, 2026Firefox 151.0
10 new features, 4 fixes, 17 other changes. Highlight: Firefox Home (New Tab) has a fresh, new look and feel. The layout and design will enable upcoming features, from widgets to shortcuts imp…
31 changes
- Stable 150.0 April 21, 2026Firefox 150.0
11 new features, 2 fixes, 15 other changes. Highlight: Split View just got better: You can now right-click any link and choose Open Link in Split View to open it alongside your current tab. Yo…
28 changes
- Stable 149.0 March 24, 2026Firefox 149.0
7 new features, 2 fixes, 18 other changes. Highlight: View two pages side-by-side in a single window with the new Split View feature that makes it easier to compare information, research topi…
27 changes
- Stable 148.0 February 24, 2026Firefox 148.0
6 new features, 3 fixes, 11 other changes. Highlight: Added an AI Controls section to Settings for managing AI-enhanced features. Learn more .
20 changes
- Stable 147.0 January 13, 2026Firefox 147.0
8 new features, 5 fixes, 19 other changes. Highlight: Address autofill has been enabled for users in Switzerland.
32 changes
- Stable 146.0 December 9, 2025Firefox 146.0
7 new features, 2 fixes, 14 other changes. Highlight: Windows 10 users can now automatically protect their passwords, bookmarks, and more by turning on backup in Firefox. Your browsing data i…
23 changes
- Stable 145.0 November 11, 2025Firefox 145.0
10 new features, 1 fix, 15 other changes. Highlight: Add, edit, and delete comments to make your own notes in PDFs (summaries, questions, tasks, etc.). The comment sidebar helps you scan all…
26 changes
- Stable 144.0 October 14, 2025Firefox 144.0
8 new features, 2 fixes, 19 other changes. Highlight: Focus on just one tab in a group without the clutter. Your active tab now stays in view, keeping things tidy even with the group collapsed.
29 changes
- Stable 143.0 September 16, 2025Firefox 143.0
8 new features, 1 fix, 10 other changes. Highlight: On Windows, Firefox now supports running websites as web apps pinned directly to the taskbar. These are sites that you can pin and run as…
19 changes
- Stable 142.0 August 19, 2025Firefox 142.0
6 new features, 3 fixes, 11 other changes. Highlight: For users in the United States, article recommendations on your New Tab page are now grouped into topic sections like Sports, Food, and E…
20 changes
- Stable 141.0 July 22, 2025Firefox 141.0
7 new features, 1 fix, 10 other changes. Highlight: Now Firefox can help you keep your tabs organized, automatically. A local AI model identifies similar tabs, automatically organizes them …
18 changes
- Stable 140.0 June 24, 2025Firefox 140.0
7 new features, 1 fix, 13 other changes. Highlight: Vertical Tabs: You can now keep more — or fewer — pinned tabs in view for quicker access to important windows. Just drag the divider to r…
21 changes
- Stable 139.0 May 27, 2025Firefox 139.0
4 new features, 3 fixes, 17 other changes. Highlight: By popular request, Full-Page Translations are now available within Firefox extension pages that start with the moz-extension:// URL scheme.
24 changes
- Stable 138.0 April 29, 2025Firefox 138.0
5 new features, 1 fix, 14 other changes. Highlight: Profile management helps protect your privacy and stay focused by separating your online life into distinct profiles — for work, school, …
20 changes
- Stable 137.0 April 1, 2025Firefox 137.0
6 new features, 1 fix, 9 other changes. Highlight: Tab groups begin rolling out today! Stay productive and organized with less effort by grouping related tabs together. One simple way to c…
16 changes
- Stable 136.0 March 4, 2025Firefox 136.0
11 new features, 2 fixes, 18 other changes. Highlight: You can now enable the updated Firefox sidebar in Settings > General > Browser Layout to quickly access multiple tools in one click, with…
31 changes
- Stable 135.0 February 4, 2025Firefox 135.0
7 new features, 2 fixes, 13 other changes. Highlight: Firefox Translations now supports more languages than ever! Pages in Simplified Chinese , Japanese , and Korean can now be translated and…
22 changes
- Stable 134.0 January 7, 2025Firefox 134.0
3 new features, 1 fix, 7 other changes. Highlight: Firefox now supports touchpad hold gestures on Linux. This means that kinetic (momentum) scrolling can now be interrupted by placing two …
11 changes
- Stable 133.0 November 26, 2024Firefox 133.0
3 new features, 2 fixes, 9 other changes. Highlight: Firefox now has a new anti-tracking feature, Bounce Tracking Protection, which is now available in Enhanced Tracking Protection's "Strict…
14 changes
- Stable 132.0 October 29, 2024Firefox 132.0
6 new features, 1 fix, 15 other changes. Highlight: Microsoft PlayReady encrypted media playback is now being rolled out to select sites on Windows. Through this support, we are gradually r…
22 changes
- Stable 131.0 October 1, 2024Firefox 131.0
4 new features, 1 fix, 12 other changes. Highlight: Firefox will now offer to temporarily remember when users grant permissions to sites (e.g. geolocation). Temporary permissions will be re…
17 changes
- Stable 130.0 September 3, 2024Firefox 130.0
4 new features, 2 fixes, 6 other changes. Highlight: Firefox now allows translating selected text portions to different languages after a full-page translation.
12 changes
- Stable 129.0 August 6, 2024Firefox 129.0
7 new features, 1 fix, 14 other changes. Highlight: Reader View now has an enhanced Text and Layout menu with new options for character spacing, word spacing, and text alignment. These chan…
22 changes
- Stable 128.0 July 9, 2024Firefox 128.0
7 new features, 2 fixes, 14 other changes. Highlight: Firefox can now translate selections of text and hyperlinked text to other languages from the context menu.
23 changes
- Stable 127.0 June 11, 2024Firefox 127.0
5 new features, 1 fix, 10 other changes. Highlight: You can now set Firefox to automatically launch whenever you start or restart your Windows computer. Setting Firefox to auto-launch optim…
16 changes
- Stable 126.0 May 14, 2024Firefox 126.0
7 new features, 1 fix, 11 other changes. Highlight: The Copy Without Site Tracking option can now remove parameters from nested URLs. It also includes expanded support for blocking over 300…
19 changes
- Stable 124.0 March 19, 2024Firefox 124.0
5 new features, 1 fix, 5 other changes. Highlight: Caret browsing mode now also works in the PDF viewer. ( Learn more )
11 changes
- Stable 123.0 February 20, 2024Firefox 123.0
2 new features, 2 fixes, 13 other changes. Highlight: We’ve integrated search into Firefox View. You can now search through all of the tabs on each of the section subpages - Recent Browsing, …
17 changes
- Stable 122.0 January 23, 2024Firefox 122.0
6 new features, 1 fix, 16 other changes. Highlight: Firefox now displays images and descriptions for search suggestions when provided by the search engine.
23 changes
- Stable 121.0 December 19, 2023Firefox 121.0
5 new features, 2 fixes, 10 other changes. Highlight: Firefox now prompts Windows users to install the Microsoft AV1 Video Extension to enable hardware decoding support for the AV1 video code…
17 changes
Nightly 
Beta