User Agent String explained :
 Firefox 3.5.3 | |
|---|---|
| Mozilla | It's a Mozilla based browser |
| 5.0 | Mozilla Version |
| X11 | X Window System a windowing system for bitmap displays |
| U | Security values:
|
| Linux i686 | Operating System:  Linuxrunning on a Intel Pentium Pro CPU |
| en-US | Language Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface) en-US =  English - United States
|
| rv:1.9.1.3 | CVS Branch Tag The version of Gecko being used in the browser |
| Gecko | Gecko engine inside |
| 20090919 | Build Date: the date the browser was built |
| Firefox | Name : Firefox |
| 3.5.3 | Version |
| First visit: | 2009.10.21 05:00 |
| Last visit: | 2010.02.04 07:11 |
All Firefox user agent strings | |