Dude you just stole my heart with this addon. This is working perfectly as I wanted to. I want to add more User-Agents and OS and others for that I need your kind help. I have emailed you to the support email listed for this addon page.

*** I'm seeking for your attention dear admin of this addon sir ***

I need your kind help to add more User-Agents, OS, Versions etc.

Can you publish an Updated Version soon? Or else You can help me to add manually?
I'm really not aware of user-agents for different browsers and OS.

*** Waiting for your response ***

Unlike some other apps I saw suggested from Firefox & others results from Apps search & Google search this 1 actually was to UPLOAD images to certain sites like Instagram (90% of the others were to download images already posted on sites by other people instead of using screenshot apps, almost complete opposite of what I was searching for). And even better you explained how it works & how to use it RIGHT in certain internet servers. That helped a lot more than what I got from Google (lol. Some results were even outdated/impossible to use now). This saved me time & even money because now I don't have to go buy a smartphone just to actually/fully use a website (or 2+).

Seems to be one of the more frequently updated UA changing extensions. Keep it up!

Love it that you can add custom strings (just use Ctrl + V to paste). It works very well. It doesn't fool the Firefox add on site, but I see this is a Firefox policy, and the developer has provided a work around. This is a terrific, easy to understand and use add on. It does fool Google and all the user-agent testing sites.

很好用，完美解决IE11兼容问题

Does the job very well.
It would be a nice addition to reset the Switcher when the browser closes.
well done!

works perfect, great Addon!