This is a suggestion on how to delete Bookmarks Unfortunately when backing up bookmarks, then restoring them, this results in many duplications. To be effective there should at least be an option whether or not to accept a duplication. Otherwise the result, in reality becomes unmanageable. To overcome much of the effort just select what is superfluous and use the Delete key. An organized Bookmarks menu (using folders) can really make the Internet a place to find anything later that has value in the moment. I've been using Library techniques for over 40 years. Microsoft's Favorites were my first introduction. Hopefully FF will tend to be very similar. What now exists is difficult to use in a number of ways.