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 | Machine value |
| Related headers | UA-Color, UA-Disp, UA-OS, UA-Pixels |
| Last seen | 2025-09-28 11:52:42 |
| Note | They provide information about the client machine that could allow for better content selection by a server. |
| Syntax | UA-CPU: <cpu> |
Example header value:ARM |
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