User Agent 字符串描述 :

FirefoxFirefox 12.0
MozillaMozillaProductSlice. Claims to be a Mozilla based user agent, which is only true for Gecko browsers like Firefox and Netscape. For all other user agents it means 'Mozilla-compatible'. In modern browsers, this is only used for historical reasons. It has no real meaning anymore
5.0Mozilla version
Windows NT 5.1Operating System:
icon Windows XP
rv:12.0 CVS Branch Tag
The version of Gecko being used in the browser
Gecko Gecko engine inside
20120403211507 Build Date:
the date the browser was built
FirefoxName :
Firefox
12.0Firefox version
 
First visit: 2012.07.18 12:04
Last visit:2015.11.05 08:21

All Firefox user agent strings