User Agent String explained :
 Firefox 3.0.13 | |
|---|---|
| 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 | 
| Macintosh | Platform | 
| U |  Security values: 
  | 
| Intel Mac OS X 10.6 | Operating System:  OS X Version 10.6 : Snow Leopard running on a Intel CPU  | 
| de | Language Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface)  de =  German | 
| rv:1.9.0.13 |  CVS Branch Tag The version of Gecko being used in the browser  | 
| Gecko | Gecko engine inside | 
| 2009073021 |  Build Date: the date the browser was built  | 
| Firefox | Name :  Firefox | 
| 3.0.13 | Firefox version | 
| First visit: | 2010.01.30 07:49 | 
| Last visit: | 2018.07.29 01:54 | 
All Firefox user agent strings  | |
Firefox 3.0.13
German