LibreWolf

ApplicationLibreWolf community

Also called libre wolf, librewolf browser

LibreWolf communityBrowsers

A community Firefox fork with stricter privacy defaults. On Windows the process is librewolf.exe.

What you need to know

LibreWolf is a Firefox fork. It is not Firefox and not LibreOffice.

LibreWolf ships community Firefox builds with telemetry off and tighter cookie defaults. The process is librewolf.exe. Mozilla Firefox is firefox.exe. LibreOffice is an office suite.

What is it?: Web browser
Still current?: Yes, see Current status
Official download?: Use the vendor link in this article

Feex says

If a site says your browser is not Firefox, I would check whether you are on LibreWolf. The engine is Gecko. The defaults are stricter, and it is not LibreOffice.

What is LibreWolf?

LibreWolf is a community-maintained Firefox fork. The Windows executable is librewolf.exe.

If you have never used it

If you want Firefox with stricter out-of-the-box defaults, this is LibreWolf. It is not mozilla.org Firefox and it is not LibreOffice. Download it from librewolf.net/installation/windows. The process is librewolf.exe. Some bank sites complain about the hardening. firefox.exe is stock Firefox. LibreOffice writes documents.

What is it used for?

Daily browsing on Gecko

Same engine family as Firefox. Add-ons come from addons.mozilla.org, not the Chrome Web Store.

Stricter defaults

Tighter cookies and fingerprint resistance. This is why some sites ask you to use Firefox.

No Mozilla account push

Sync is not the Firefox account product. That is a LibreWolf choice.

Who is it for?

People who want Firefox without Mozilla defaults
Users who already keep a LibreWolf profile
Anyone who searched LibreWolf and landed on LibreOffice

Current status

LibreWolf (2020) is a current web browser from LibreWolf community. The vendor still points Windows users at https://librewolf.net/installation/windows/.

How old is it?

LibreWolf started in 2020 as a community Firefox fork. It is much newer than Firefox 1.0. Current builds still follow the Firefox train. A 2012 IceCat guide is a cousin story, not this installer.

Versions

Major channels first. Exact build numbers are not all verified here.

Current Windows build

System requirements

Values follow the publisher's public guidance. Workload still changes the real need.

Minimum

Minimum system requirements
Operating system	A current supported Windows 10 or Windows 11 release, per the vendor
RAM	Enough for Windows plus this app. Heavy projects want more.

Resource profile

CPU demand: Follows what you open inside the app
RAM demand: Follows documents, tabs, or libraries

Installed processes

These executables belong to this product when it is installed.

Installed processes
librewolf.exe	Main Windows executable

Startup components

LibreWolf can restore the previous session. That is a browser setting, not a Windows service.

File locations

Common LibreWolf locations
Typical install	C:\Program Files\LibreWolf\

File formats

HTMLPDFPNGJPEG

Common problems

Site logins fail after hardening

ResistFingerprinting and strict cookies break some banks. Relax per-site settings before you reinstall Windows.

Name collision with LibreOffice

Uninstalling LibreOffice does nothing to librewolf.exe.

Getting unstuck

Open about:support inside LibreWolf

It names the profile and build. Stock Firefox about:support is a different folder.

Read the FAQ before fixing search

LibreWolf changes default search and telemetry on purpose. That is not a hijack by itself.

Install from librewolf.net

A LibreWolf plus codecs bundle on a filename site is junk.

Alternatives

Stock Firefox if you want Mozilla sync. Tor Browser if you need the Tor network. LibreOffice does not browse the web.

Official help and downloads

Start with the vendor. Random exe sites are not a support channel.

Official contacts
Download	librewolf.net/installation/windows/ Official installer or vendor page
Help	librewolf.net/docs/faq/ Vendor support
Official site	librewolf.net/ Start here, not a random exe host

Related hardware

Same class as Firefox: RAM and a current GPU driver.

Technical details

Vendor version numbers change. This article does not pin a build.

Sources and verification

Reviewed by Feex editorial. Last verified August 2026 Status: Feex Reviewed. How we research.

LibreWolf official site · Vendor product page
LibreWolf help · Vendor support
Foxhole process map · First-party samples on Windows PCs. Not a lab benchmark.

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