In Firefox 96+ you can right-click a bookmark search/query/recent result list and click "Show in Folder" to locate this bookmark in the folder list.

Of course, I know, I pushed for that feature a long time ago. The questions above are beyond just finding the one bookmark's folder.

It is about working with many bookmarks incl session's duplicates, etc. One needs to be able to sort them in the bookmark manager window and see the folder in the bookmark sidebar. Simply removing all duplicates will erase them from the wrong folder. It is beyond me that nobody has thought of putting that column into the bookmark manager.

That is probably not done for performance reasons, doing this for thousands of bookmarks is costly, and that is why it took so long to get this show folder feature. Finding the folder in the folder tree requires backtracking until you reach the root folder. You can have multiple folders with the same name and if only the name of the parent folder is known, you still wouldn't know what folder this is about without knowing the full path.

You can execute SQLite queries to get a list that includes the parent folder, there are extensions to check for duplicates and provide this information.

• https://addons.mozilla.org/en-US/firefox/addon/bookmarks-organizer/