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http header

Sec-CH-UA-Full-Version header

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Secure context

[!NOTE] This is being replaced by the Sec-CH-UA-Full-Version-List.

The HTTP Sec-CH-UA-Full-Version request header is a user agent client hint which provides the user-agent’s full version string.

Header type [Request header](https://developer.mozilla.org/en-US/docs/Glossary/Request%20header), Client hint
[Forbidden request header](https://developer.mozilla.org/en-US/docs/Glossary/Forbidden%20request%20header) Yes (Sec- prefix)

Syntax

Sec-CH-UA-Full-Version: <version>

Directives

  • <version>
    • : A string containing the full version number, like “96.0.4664.93”.

Examples

Using Sec-CH-UA-Full-Version

A server requests the Sec-CH-UA-Full-Version header by including the Accept-CH in a response to any request from the client, using the name of the desired header as a token:

HTTP/1.1 200 OK
Accept-CH: Sec-CH-UA-Full-Version

The client may choose to provide the hint, and add the Sec-CH-UA-Full-Version header to subsequent requests. For example, the client might add the header as shown:

GET /my/page HTTP/1.1
Host: example.site

Sec-CH-UA: " Not A;Brand";v="99", "Chromium";v="96", "Google Chrome";v="96"
Sec-CH-UA-Mobile: ?0
Sec-CH-UA-Full-Version: "96.0.4664.110"
Sec-CH-UA-Platform: "Windows"

Specifications

SpecificationsStandards references are available on the canonical MDN page.

Browser compatibility

Browser compatibilityCompatibility data is available on the canonical MDN page.

See also