You can click the star at the right end of the location bar to bookmark the current tab. *https://support.mozilla.org/en-US/kb/bookmarks-firefox

It's all over the place, ''except'' on the drop-down from the optional Bookmarks Menu toolbar button (<img src="https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/gallery/images/2021-06-19-21-15-40-ba2c56.png">). So in addition to the star icon in the address bar: * "3-bar" menu button > Bookmarks > Bookmark current tab * right-click the current tab to display the context menu > "Bookmark Tab" (if multiple tabs are selected, it changes to Bookmark Tabs...) * right-click an empty area of the page to display the page context menu > click the star icon * (menu bar) Bookmarks menu > Bookmarks Current Tab. Perhaps they should add it back to the one place it's missing?