Where Does uBlock Origin Store Filters and Settings?
Where uBlock Origin keeps filters and settings in desktop browsers, per profile folders. See the folder table below.
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uBlock Origin lives inside each browser profile. Filters, dynamic rules, and settings sit in extension storage under the profile directory. Different browsers use different profile roots.
That per profile design confuses movers. New profiles start empty even with the same OS login. For keeps, use the dashboard backup to file per browser. Exact extension IDs vary by Chrome versus Firefox builds. Restoring the file on the new profile brings back rules without touching bookmarks. When in doubt, verify paths inside the app before trusting a remembered folder.
Where uBlock Origin stores this, by platform
%localappdata%\Google\Chrome\User Data\Default\Extensions (per profile)
Filters live in extension storage per browser profile. Back up from the dashboard to file. Restoring needs the same browser family. Sync does not reliably move data.
~/Library/Application Support/Google/Chrome/Default/Extensions (per profile)
Same extension storage model under browser profiles on Mac. Export from the dashboard before switching machines. Firefox profiles live under ~/Library/Application Support/Firefox.
Frequently asked questions
How do I move uBlock settings to a new browser?
Open the dashboard, back up to file, then restore on the new browser. Filters, rules, and whitelists live in extension storage per browser profile. Syncing browsers does not reliably move extension data, so manual backup is the safe path.
Does browser sync back up uBlock?
No. uBlock stores everything in extension storage inside each browser profile folder on disk. Clearing browser data wipes it unless backed up first. Export settings from the dashboard before resetting browsers. Cloud sync is not the backup here.
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