Where Is the Thorium Browser Profile Folder?
Thorium User Data folder on Windows with Default profile, extensions and cache.
Last updated
Thorium stores profiles in a Chromium-family User Data tree with bookmarks, extensions, history and cache inside. No account sync exists, so the folder is the only copy of your browsing state.
The Default subfolder is the profile most people use. Copy the whole User Data tree with every window closed and extensions plus settings travel intact.
Where Thorium stores this, by platform
%LOCALAPPDATA%\Thorium\User Data
Default profile sits in the Default subfolder with Bookmarks and Preferences inside. Confirm the Thorium folder name on your build since packagers vary. Copy with all browser windows closed; locked files silently skip and corrupt the restore.
Frequently asked questions
How do I back up Thorium?
Copy the full User Data folder with the browser closed. Paste it back to the same location to restore everything, since no cloud sync exists.
Where are Thorium extensions?
In the Extensions subfolder of the profile directory above, one versioned folder per extension.
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