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!

Теперь работает прекрасно, спасибо за хороший аддон. Только не прекращайте его поддержку, перепробовал все, но такого функционала нет нигде.

This is the only UA switcher among those most popular which "per domain" mode actually works per domain and not only for the current session.

Works really good, and got me old twitter back!

Tried it out and it does exactly what it says on the tin. Great for bypassing paywalls and “disable your ad-blocker (so we may cram 864 trackers down your gullet)” messages and so on. Thanks!

Great! Could revert to the older version of Twitter instead of the crappy new one! Thx a LOT!

Thanks for giving me control over my browser experience. User-agent checkingis a lazy way to do "site compatibility"

Ever best UA switcher I have used.
The panel is a bit too narrow, can't display domain when using 'domain specific'. If is good if I can customize the width by myself.