User Agent 字符串描述 :

FirefoxFirefox 3.5b4
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 Platform
U Security values:
  • N for no security
  • U for strong security
  • I for weak security
Windows NT 6.0Operating System:
icon Windows Vista
en-GBLanguage Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface)
en-GB = English - Great BritainEnglish - Great Britain
rv:1.9.1b4 CVS Branch Tag
The version of Gecko being used in the browser
Gecko Gecko engine inside
20090423 Build Date:
the date the browser was built
FirefoxName :
Firefox
3.5b4Firefox version
.NET CLR 3.5.30729 .NET framework
Version : 3.5.30729
 
First visit: 2009.04.28 11:41
Last visit:2015.10.16 11:43

All Firefox user agent strings