User Agent String explained :
 Firefox 3.8 | |
|---|---|
| Mozilla | MozillaProductSlice. 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 |
| 5.0 | Mozilla version |
| Windows | Platform |
| U | Security values:
|
| Windows NT 5.1 | Operating System:  Windows XP |
| 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 =  Italian - Italy |
| rv:1.9.2.3 | CVS Branch Tag The version of Gecko being used in the browser |
| Gecko | Gecko engine inside |
| 20100401 | Build Date: the date the browser was built |
| Mozilla | MozillaProductSlice. 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 |
| 5.0 | 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 |
| it-IT | Language Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface) it-IT = Italian - Italy |
| rv:1.9.0.2 | CVS Branch Tag The version of Gecko being used in the browser |
| Gecko | Gecko engine inside |
| 2008092313 | Build Date: the date the browser was built |
| Ubuntu | Ubuntu Linux distribution |
| 9.25 | Version 9.25 |
| jaunty | jaunty version |
| Firefox | Name : Firefox |
| 3.8 | Firefox version |
| First visit: | 2010.04.03 09:14 |
| Last visit: | 2023.05.30 06:34 |
All Firefox user agent strings | |