A request headers is an HTTP header that the client sends to the server.
HTTP request headers list | Browser Headers Viewer
| Type | Non-standard |
| Subype | Opera SW |
| Related headers | X-Opera-Info, X-Operamini-Features, X-Operamini-Phone, X-Operamini-Phone-Ua, X-Operamini-Route, X-Operamini-Uid |
| Last seen | 2025-12-04 08:20:40 |
| Link | https://dev.opera.com/blog/introducing-device-stock-ua/ |
| Note | The value of this header matches that of the stock user agent bundled with the operating system on which Opera Mobile or Mini is running. |
Example header value:OperaMini(Fucus/Unknown;Opera Mini/4.4.33576;en) |
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