Reading Bookmark Cleaner runs locally in the browser.

The extension uses the Firefox bookmarks permission to read and manage bookmarks only when the user chooses to scan, move, delete, or export bookmarks. It uses the storage permission to save local extension settings, such as light/dark view and the include-subfolders option.

The extension does not collect, transmit, sell, or share personal data. Bookmark data is not sent to any external server.