Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The Sec-CH-UA-Platform-Version user agent client hint request header provides the version of the operating system on which the user agent is running.
| Header type | Request header, Client hint |
|---|---|
| Forbidden header name | yes |
Sec-CH-UA-Platform-Version: <version>
<version>
The version string typically contains the operating system version in a string, consisting of dot-separated major, minor and patch version numbers. For example, "11.0.0"
The version string on Linux is always empty.
A server requests the Sec-CH-UA-Platform-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-Platform-Version
The client may choose to provide the hint, and add the Sec-CH-UA-Platform-Version header to subsequent requests. For example, the following request headers might be sent from a browser running on Windows 10.
GET /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-Platform: "Windows"
Sec-CH-UA-Platform-Version: "10.0.0"
| Specification |
|---|
| User-Agent Client Hints # sec-ch-ua-platform-version |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
Sec-CH-UA-Platform-Version |
89
|
89
|
No
|
No
|
75
|
No
|
89
|
89
|
No
|
63
|
No
|
15.0
|
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https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Sec-CH-UA-Platform-Version