How to change tags of multiple bookmarks?

On desktop computer

1. Make sure your are on the My Bookmarks page (select the My Bookmarks menu).
2. Select multiple bookmarks.
3. New menus will appear below the Search field, click on "Edit Tags".
4. The "Edit Tags" dialog will come up.
5. Select the "Replace existing tags with these tags" radio button.
6. Enter tags in the Tags field.
7. Click on "Update Tags".
8. The selected bookmarks' existing tags will be replaced with the new tag(s).

On mobile device
This feature is not available on mobile devices.