No clue why Mozilla still recommends this extension. Every time I've used it, it mysteriously disables itself after an unknown period of time. This extension is leaky and it shouldn't be recommended.

какая удивительная возможность и прекрасное творчество, которое действительно очень хорошо и осуществимо.

Works great after hours (lierally more than an hour) figuring out how to change the UA string for only ONE domain. Not intuitive. Not well enough explained and the GUI could be easier for the user. But it does work once I dug deep enough.

Ok

a must have powerfull tool

Amazing extension and supports different user-agents across containers. Great add-on and one of the reasons why I still use firefox for work (Need to sometimes fake an IE-11 user-agent in order to make websites work)

Great, you should really advertise ability to use a different UA per container more, didn't find another addon that does that yet.

I had several websites such as Google Ads that said the latest version of Firefox wasn't supported. This extension allowed me to appear as a chrome user on Windows and eliminated that issue. This extension does exactly what it says and has a ton of options. Thanks Devs!!