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Mozilla Firefox (eo) 141.0 download

Mozilla Firefox is free and open source software, built by a community of thousands from all over the world.

This is an older version. The current version is 157.0.1. Mozilla Firefox (eo) 157.0.1 · Released:
141.0 is part of the 141 line, which reached its end of life on August 19, 2025. It no longer receives security fixes. endoflife.date

Installer files 141.0

ArchitectureTypeScopeFile sizeDownloadSHA256
64-bit EXE (NSIS) All users — download-installer.cdn.mozilla.net VirusTotal
ARM64 EXE (NSIS) All users — download-installer.cdn.mozilla.net VirusTotal
32-bit EXE (NSIS) All users — download-installer.cdn.mozilla.net VirusTotal

Link and SHA256 come from the Windows Package Manager community manifest. Compare the hash of the downloaded file before running it.

Release notes

New
- Now Firefox can help you keep your tabs organized, automatically. A local AI model identifies similar tabs, automatically organizes them into groups, and even suggests group names. Everything happens on your device to respect your privacy. Learn more here.

This feature is part of a progressive roll out.
What is a progressive roll out?
Certain new Firefox features are released gradually. This means some users will see the feature before everyone does. This approach helps to get early feedback to catch bugs and improve behavior quickly, meaning more Firefox users overall have a better experience.
- Vertical tabs users can now adjust the size of the tools areas at the bottom of the sidebar. To see fewer tools and more tabs, drag down the divider line which pushes extra tools into an overflow menu.

- On Linux, Firefox uses less memory and no longer requires a forced restart after an update has been applied by a package manager.
- Address autofill has been enabled for users in Brazil, Spain and Japan.
- The Firefox address bar can now be used as a unit converter. The unit converter supports converting units of length, temperature, mass, force, and angular measurement, as well as timezones (e.g. “now in GMT” , “10am EDT to CET”). Selecting the result will copy it to your clipboard.

- Firefox builds in Valencian now come with a built-in Catalan (Valencian variant) dictionary for the Firefox spellchecker.
- The following languages are now available for translation:
- Albanian
- Gujarati
- Hebrew
- Hindi
- Kannada
- Malay
- Malayalam
- Persian
- Telugu
Fixed
- Various security fixes.
Changed
- Firefox on Windows 11 now uses system provided font icons for the caption buttons, more in line with Windows 11 conventions.
Enterprise
- You can find information about policy updates and enterprise specific bug fixes in the Firefox for Enterprise 141 Release Notes.
Developer
- Firefox will now also clear the back-forward-cache when receiving the Clear-Site-Data: "cache" response header.
Web Platform
- Enabled the WebGPU API (spec; MDN) on Windows. For details, see the Mozilla Graphics Team Blog.
- Implemented the closedby attribute and it's related closedBy property on dialogs indicating the types of user actions that can be used to close the associated <dialog> element.
- Support for Cookies Having Independent Partitioned State (CHIPS) is now re-enabled, allowing developers to opt a cookie into storage partitioning per top-level site.
- The HTMLElement.showPopover() and HTMLElement.togglePopover() methods now take an options.source argument referencing the popover invoker, and togglePopover() also takes a force resp. options.force argument to force the popover open or closed.
Community Contributions
- With the release of Firefox 141, we are pleased to welcome the developers who contributed their first code change to Firefox in this release, 12 of whom were brand new volunteers! Please join us in thanking each of these diligent and enthusiastic individuals, and take a look at their contributions:
- ales.astone: 1920385, 1968910
- Chris Vander Linden: 1888847
- Gabriel Astorgano[:astor}: 1911190
- Jelte Fennema: 1945951
- Mr. Beedell, Roke Julian Lockhart (RJLB): 1969599
- Nick Crast: 1965895
- Sajid Anwar [:sajidanwar]: 825197, 1969770
- Simon Wülker: 1971080
- Skye Green [:skyevg]: 1965646
- viet-hung.nhu: 1968288
- wilsu: 1956211
- наб: 1970690

https://www.mozilla.org/firefox/141.0/releasenotes/

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