Does exactly what I need it to do. I love that I can set the user agent per site. I can save and export my configuration or I can change the user-agent string ad-hoc.

This is a great, simple, and robust application. 5-stars for my needs.
Several shortcomings: The user agents are not that up-to-date. currently, i am using fierfox 112 but the add-on shows a user agent up to firefox 108. not a big deal; i can edit that manually but i preferred if the add-on automatically updated that info.
I'd also like there to be a mode for the extension to auto-apply the most used user agents out there on the web.

does the work but slows down the PC

Ich finde das teil top :-)

IDK who "recommended" this extension but they should hide somewhere bc it's a piece of crap which makes the CPU going nuts every 30 seconds!

résout les problèmes sur fdj.fr à partir de Ubuntu

inconsistent spoofing. it just didn't work once and reddit got my native. you also can't visit add0n.com, their website, with this plugin active. the captcha never resolves.

i wouldn't trust this extension if you have any serious privacy concerns