Deja Bookmarks от Synthea

Deja Bookmarks turns your bookmarks into a fast, fully navigable tree right in the Firefox sidebar — and adds powerful tab management on top.

Bookmarks

• Tree view of all your bookmarks and folders in the sidebar
• Instant search by name, URL or folder, plus filter by domain
• Drag-and-drop to reorder and move items between folders
• Create folders and bookmarks, rename, and multi-select to move, export or delete
• Mark folders and bookmarks as favorites for one-click access

Tabs & tab groups

• See all open tabs grouped, filter them, and select in bulk
• Save selected tabs to any folder (duplicates skipped automatically)
• Open a folder's bookmarks as a new tab group
• Advanced tab search: duplicates by URL, occurrences per domain, old/unvisited tabs, tabs already bookmarked, tabs with no title, and tabs playing audio

Macros

• Automate tab cleanup: close exact URLs or remove duplicate tabs
• Optionally run macros automatically when the browser starts

Import / Export

• Import bookmarks from an HTML file
• Export selections or everything as HTML, or copy as Markdown

Privacy

• No data collection, no tracking, no external servers — everything stays in your browser.