Ottima.

Perfect

I needed to access a website that tells me that my Firefox browser on a (Ubuntu) Linux host is not supported, and the site refused access. Thanks to User-Agent Switcher the site now thinks I am a MacOS box with Safari, and gives me access. Awesome. Thank you.

相当好用的扩展, 不过也希望优化一下, 可以在选定模式后, 隐藏模式选择框, 并自动刷新当前页面, 这样体验感更好.

安装不上啊

The drop-down menu with user agents to choose from is such a good idea. Makes it very easy to pretend I'm Google Bot when I need to.

Solved my instagram problem. How do I activate dark theme tho?

With Gramblr dead and buried, and the mobile browser simulators in my Firefox web console resulting in nothing but error messages, I needed a way to continue posting photos to Instagram from my Mac desktop. All I have to do now is switch the Switcher on and off -- thanks, and stay in business!

Excellent solution to deal with seriously buggy/bloated Yahoo email "classic mail" webpage (recent forced "upgrade" from yahoo) and also google's forced removal of lightweight sending text messages from browser (replacement is bloated, extremely slow). IN BOTH CASES - set user-agent to android/firefox browser for *.yahoo.com or voice.google.com as appropriate, and now I get a usable, lightweight presentation without yahoo's bugs/bloat and google's bloat of their desktop browser presentations. Also user-agent changer adds no perceptible load to my extremely low-resource computer, excellent!