Hi, renyuneyun -- thanks for your post. I used your tip to bookmark all the tabs I had open, but couldn't find a way to deselect all tabs, so there was no way to close one tab without closing all tabs. If there's such a way, would you mind sharing it with me? The difference between the solution you provided and the Brave "bookmark all tabs" function is that in Brave doesn't lock all the tabs together for purposes of closing (or anything else). Again, if there's a way in Firefox to de-select all the tabs after saving them, so you can close one or more without closing all, that would provide Firefox the same functionality as Brave.