LibreWolf
LibreWolf stores per-profile web content cache for pages you visit, including HTTP disk cache entries, compiled JavaScript bytecode, decoded image surfaces, media cache chunks, and site storage leftovers that help pages reopen faster. As those files age, they can become inconsistent with newer site assets or browser updates and lead to broken page rendering, playback glitches, or unusually large cache folders. Kudu removes LibreWolf's disposable per-profile cache data so the browser rebuilds fresh copies without touching bookmarks, saved passwords, extensions, or account data.
Why clean LibreWolf?
- Outdated HTTP cache entries can keep serving old CSS or JavaScript after a site deploy, which shows up as broken layouts, missing buttons, or pages that only work after a hard refresh
- Stale compiled script cache from a browser update or changed site code can force LibreWolf to reparse and rebuild content on launch, causing a noticeably slow first load of frequently visited sites
- Corrupted image and decoded surface cache files can leave blank thumbnails, missing icons, or avatars that never appear until the cache is cleared
- Old media cache chunks may interfere with streaming playback, leading to videos that buffer strangely, restart at the wrong point, or refuse to play in one profile
- Accumulated per-profile cache files can grow into hundreds of megabytes or more, especially after heavy browsing, and users notice unexpected disk usage under LibreWolf profile cache folders
- Site-specific cached assets can get stuck after cookie or session changes, producing repeated login loops, partial page loads, or pages that render differently in private windows than in the normal profile
- Fragmented SQLite storage pages in profile databases can waste space and slow reads; VACUUM rewrites the database file to compact free pages without deleting your saved rows
Cache paths Kudu targets
Windows
%LocalAppData%/LibreWolf/Profiles |
macOS
~/Library/Caches/LibreWolf/Profiles |
Linux
~/.cache/librewolf |
~/.librewolf |
Common questions about LibreWolf
Download Kudu and reclaim your disk space.
Available on Windows, macOS, and Linux. No account required, no feature gates, no telemetry without consent. All cleaning targets are open source and community-auditable.