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 Some results were even outdated/impossible to use now).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.

Tested this addon against sites like: https://panopticlick.eff.org/
As you will clearly see when you test it for yourself, it does not work.
Set it to windows / IE : here is my test result
User Agent
7.92

242.32
Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko
as you can clearly see it does not work.

Missing the "append" mode and a confirmation check when you delete a existing user-agent string.
Apart from that, its fine and simple.

SEHR zufrieden, klappt so, wie ich will.
Manchmal allerdings settings völlig schwarz.

很好用，完美解决IE11兼容问题

This is pretty decent. The Playstation default I like as it forces a lot of broken websites (eg. Gmail, YouTube) to work. The downside is adding or changing them does not work. And the CURL and WGET are bad options as they make websites think you're some scraper bot.

great extension but
please add domain exception list, some sites look terrible on big screen and some other force you to open site with app like soundcloud and fb messenger

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

感覺有點耗資源 不過youtube上使用還是可以的

works perfect, great Addon!

ok