For Chrome/ium (very similar for Firefox) - Ctrl+Shift+D (bookmark all), optionally type name, press Enter - Ctrl+Shift+O [Cmd+Shift+ B on Mac IIRC] (open boo

For Chrome/ium (very similar for Firefox) - Ctrl+Shift+D (bookmark all), optionally type name, press Enter - Ctrl+Shift+O [Cmd+Shift+ B on Mac IIRC] (open bookmarks), click on the folder or navigate to it with Tab and arrows - Important: press Tab to select the contents rather than the folder - Ctrl+A, Ctrl+C