Rated 5 out of 5 stars
Have used this for years.
This is the kind of plug-in that Mozilla was supposed to be all about. "Your browser, your way." Add functionality, add toolbar buttons, etc.
Mozilla has transformed into Chrome. Why use it at all after 54.0.1 or 57?
If/when I have to update beyond 54.0.1, it will be Waterfox, which hopefully will work with this plugin.