User Agent String explained :
 Opera 10.51 | |
|---|---|
| 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 NT 6.1 | Operating System:  Windows 7 |
| U | Security values:
|
| en-GB | Language Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface) en-GB =  English - Great Britain |
| rv:1.9.1.6 | CVS Branch Tag The version of Gecko being used in the browser |
| Gecko | Gecko engine inside |
| 20091201 | Build Date: the date the browser was built |
| Firefox | Opera pretends to be Firefox |
| 3.5.6 | Firefox version |
| Opera | Name : Opera |
| 10.51 | Opera version |
| First visit: | 2010.03.14 12:28 |
| Last visit: | 2025.08.29 10:53 |
All Opera user agent strings | |