To open the '''Bookmarks Manager,''' press the '''Alt''' or '''F10''' key bring up the tool bar, and select '''Bookmarks.''' Hot key is '''<Control>''(Mac=<Command>)'' <Shift> B.''' You can then look thru and check each bookmark and move it if you want. Use with '''Extreme Caution;''' '''[https://addons.mozilla.org/en-US/firefox/addon/bookmark-duplicate-cleaner/ Bookmark Duplicate Cleaner]''' {web link} Scans for bookmark duplicates and allows you to delete them '''[https://addons.mozilla.org/en-US/firefox/addon/bookmarks-checker/ Bookmarks Checker - check for bad links]''' {web link} Check favorites for broken or bad links. It checks for bad links and displays a report if it finds something. Check for 404 links, timeout links.