Bookmark Space is a 100% local-first extension. We do not track, collect, store, or transmit your bookmarks, folders, browsing history, or personal data. All bookmark data processing and storage happens entirely within your browser's local database.

When you purchase and activate a Pro pass, only your license key and purchase email are securely transmitted to our server to validate your tier.

By default, the extension fetches website icons (favicons) directly from DuckDuckGo's secure caching service to display visual cards. This outbound connection can be completely disabled in the extension settings for a fully offline, hermetically sealed experience.