You mean you want to hide or move the standard items: Show All Bookmarks Bookmark This Page Subscript to This Page ''(if applicable)'' Bookmark All Tabs Bookmarks Toolbar Other Bookmarks There isn't a built-in way to do that. There are many bookmark-related add-ons so maybe one of them has that feature? You can search among the available add-ons starting here: https://addons.mozilla.org/firefox/search/?q=bookmarks+menu I see this one for the menu that drops from the toolbar, I don't know whether it works on the "classic" top menu bar as well: https://addons.mozilla.org/firefox/addon/simple-bookmarks-menu/