This add-on isn't compatible with Pale Moon Browser, which does not support WebExtensions. I would really love to use this add-on, but unless Pale Moon compatibility is added, I can't use it. If Pale Moon compatibility is ever added, I will change my review to five stars.

Edit: The developer very kindly helped me find an older version that works, and it's an excellent extension! Does exactly what it says it does and it's fairly versatile with its capabilities. Definitely earns the 5 stars.