FF add-on to change browser UA for specific sites

[JackPollack]

Years ago I used a classic Firefox extension called UAcontrol . It allowed me to set specific user agent strings for specific URls. I’m looking for something similar that will work with modern FF.
So basically, I want the browser normal UA reported for most sites, but want different specific UA strings for several sites. The closest I could find was User-Agent Switcher and Manager, but it isn’t even close to what I want.
Any other suggestions?

 

[file3456]

Yeah, it's hit and miss with good extensions that were developed for the older Firefox that used XUL code instead of this crap code they use now which I can't remember it's name now. All I know is that the code used now is vulnerable to exploits.

I tried to find a good UA extension for Firefox and really couldn't find anything that was like the UA add-on I had before. Currently, my main driver is Pale Moon that still uses the tried and true XUL code so I still use UAControl I had in Firefox years ago.