Rated 4 out of 5 stars

by Chris Peterson on May 20, 2013 ·

But I wish it came bundled with some User-Agent strings. Also, the switcher UI is a little cumbersome.

Rated 5 out of 5 stars

by 艾杯 on May 8, 2013 ·

it does a good job in most sites ,except the one "m.taobao.com/channel/act/mobile/h5/10nian.html".and chrome works normally with "F12" .it's hard to express express what i mean with my poor english.= =

Rated 5 out of 5 stars

by Noxious Ninja on May 6, 2013 ·

Really useful for testing. Unfortunately, I need to some environment sniffing, and the fact that this tool can set both useragent and navigator.platform is great.

navigator.userAgent support is currently broken due to a bug in Firefox, but it looks like that will get fixed in Firefox 22. In the meantime, you can manually go to about:config, set general.useragent.override to what you want, then restart Firefox.

Rated 5 out of 5 stars

by Daniel on May 4, 2013 ·

Excellent add-on on Firefox

Rated 4 out of 5 stars

by gartour on May 1, 2013 ·

clash with session manager 0.8.0.1 in firefox 20.0.1

Rated 5 out of 5 stars

by St1976 on April 15, 2013 ·

Eine hinterlegte URL fürs Update wäre cool.
Would be cool to have an update-URL included.

Rated 5 out of 5 stars

by vadim on April 14, 2013 ·

Best extention ever

Rated 4 out of 5 stars

by Daniel on Feb. 16, 2013 ·

great addon - thank you :-)
please provide German translation

Rated 1 out of 5 stars

by R. Menessec on Jan. 28, 2013 ·

I was unaware that this didn't change JS reporting of agent strings. That explains why it doesn't work at all for some sites.

Please fix.

Rated 2 out of 5 stars

by Drew Wells on Jan. 9, 2013 ·

This will make server calls show a fake user agent, but has no effect on navigator.userAgent. Good enough if you are just testing server side UA sniffing.

Rated 3 out of 5 stars

by Jimmy Page on Nov. 20, 2012 ·

I would give this one or two more stars apart from one unforgivable problem. It disables the ability to type in the console in firebug. Someone else has noticed this here https://groups.google.com/forum/?fromgroups=#!topic/firebug/4GyC6_2prRQ . Apart from that really well written.

Rated 5 out of 5 stars

by driedfruit on Oct. 29, 2012 ·

My ISP have unlimited plans for mobile devices but not for desktops. Still applications like utorrent can use internet but not the Browsers, here comes the role of user agent switcher to spoof the agent. As my mobile (J2ME) cannot run scripts etc I had problems viewing pages in that but with User Agent Switcher I can open them in desktop.

Rated 5 out of 5 stars

by TemMus on Oct. 28, 2012 ·

Süper bir eklenti, çok işime yarıyo gerçekten.

Rated 3 out of 5 stars

by Mike on Oct. 10, 2012 ·

While it does switch the User Agent, this addon is pretty much useless when testing Mobile webpages. It doesn't detect the size of the screen to switch the view between profile and landscape. Chrome is far superior with it's built in features to switch User Agents. I prefer Firebug in Firefox over Chrome, but testing mobile sites on Firefox is still way behind the game.

Rated 5 out of 5 stars

by snowboard helmets on Oct. 7, 2012 ·

Epic when you work with Mobile Web. Of course it does not emulate the html rendered by the devices but the main use is to test the behavior of some application in lots of user-agents

Rated 5 out of 5 stars

by 牛牛 on Sept. 27, 2012 ·

1.the shortcut seems doesn't work,if can set like"Ctrl+F12" ect. is good
2.view source with special editor just one step(add a button or right menu that view source by one click!)
tks for you work !

Rated 2 out of 5 stars

by Bobi on Sept. 17, 2012 ·

It did nothing to change the Facebook Timeline, which is why I installed it.

Rated 5 out of 5 stars

by Vineeth Reddy R on Sept. 4, 2012 ·

Works well and easy to use.

Rated 3 out of 5 stars

by Nate108 on Sept. 3, 2012 ·

This add-on is great. It does what is says. I have only one complaint... I wish the selected user agent would stay that way even if Firefox is restarted, at least until I tell it to go back to default.

Rated 3 out of 5 stars

by penubag on Aug. 25, 2012 ·

This addon does what it advertizes perfectly but there are a few gripes: The only way to access the User Agent Switcher is by pressing "alt" to revial th menu under tools. It is not accessable in the firefox button. I would like to see it under the Web Development button. This also poses a problem for Ubuntu Firefox who are unable to access the Firefox menu unless we enable global menu integration addon provided by Ubuntu. Another, I would LOVE to see an option to change the OS user agent. Pretty Please?