Minimal, under 1 MB (not like other extensions which can be up to 8 MB for no reason). Works as expected, great UI. Thank you for developing this, it's a far better option to the more popular extensions.

I love this add-on!
With the recent onset of Apple enforcing its "proprietary" right to use the emojis we are all used to, Slack, et al were forced to switch to their own, non-Apple Color Emoji typeface -- and if you're like me, they're HIDEOUS emojis. This extension allows me to permanently spoof the user agent to an iOS device for specific sites where I use emojis a lot. Like Slack, fb, etc.
When I was using Chrome browser, I could only achieve this by CTRL+I and de-toggling "Select automatically" under the Network Conditions sub-menu inside dev tools. So this permanent fix in Firefox is exactly what I wanted.

浏览器标识切换工具。我觉得选项太多了，其实只要苹果，windows，IOS，安卓几个主流的就行了。

I usually install the most downloaded add-on. Not this time. I installed the best rated one. And I don't regret it one sec. Very good, intuitive Firefox extension.

This app is so helpful.

This is easily the best user agent switcher I've tried. It has the most comprehensive and most customizable list of browsers and operating systems to choose from, and is the only one that I have found with the ability to set the user agent on a per-site basis in Quantum, which makes it even more powerful. Thanks!

Very good addon to go past google search filter limitations when using firefox android browser. I use it to whitelist google domains and load the chrome android user agent when doing google searches so i can have all filters.

Text in dropdown is the same colour as the background, making it unreadable.
Edit: Fixed

I used the Chrome string and was able to login to Directvnow. I am able to watch in Firefox rather than stupid Chrome. I will donate soon.

This is the best useragent switching addon.

Works well with Firefox Nightly v60.0a1 on Android v6.0.1. Would be vastly improved if regular expressions (extended form) could be used to match against entire URLs. Currently, only the absolute string of the top-level hostname can be checked. But with regular expressions, it would, for example, be possible to match "^[fhttps]*\:\/\/www\.google\.co(m|\.[^\/]*)\/imgres\?" against URLs, in order to specify the user agent for displaying an image returned from a Google image search. Although this is a seemingly-specific example, with extended regular expression matching, anything would be possible, as they provide maximum URL-matching flexibility.

可以在A
droid上使用

Great add-on. But need latest browser user agent.

I tried several user agent switching add-ons, and this is the only one that did what I wanted properly: allow a whitelist for sites to only apply the selected user agent. And it has an update splash disable option, which should be a requirement for all add-ons.

coololol

Berfungsi dengan baik untuk android, terimakasih.

Completely useless.. I can't even save a list of crawler user agents (like Googlebot or Bingbot) with which I want to visit a site.. a single textfield isn't going to cut it.

在安卓平板上用非常棒……

Very good