User Agent String explained :
 Firefox 19.0 | |
|---|---|
| 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 x86 | Operating System: running on a Intel CPU |
| rv:19.0 | CVS Branch Tag The version of Gecko being used in the browser |
| Gecko | Gecko engine inside |
| 20100101 | Build Date: the date the browser was built |
| Firefox | Name : Firefox |
| 19.0 | Firefox version |
| First visit: | 2014.04.19 12:13 |
| Last visit: | 2025.05.12 12:43 |
All Firefox user agent strings | |