Sec-CH-UA Platform HTTP Header: Syntax, Directive, Examples

The Sec-CH-UA Platform HTTP Header user agent client hint request header tells you what platform or operating system the user agent is running on, so you can figure out what it is. If you want to use “Windows,” for example, you can say that. The Sec-CH-UA Platform HTTP Header low entropy is a clue that the platform is the right choice. As long as it isn’t blocked by a policy for user agents, it will be sent by default. Without the server sending Accept-CH, there is no way to join. This header, Accept-CH, can be set by a server to tell the next time the client sends a request which client hint headers it should use. There is only one value for the Sec-CH-UA HTTP Header. The directive value for the Sec-CH-UA Platform HTTP Header is the <platform>. An example for the Sec-CH-UA Platform HTTP Header is written below. 

Sec-CH-UA-Platform: "macOS"

The Sec-CH-UA Platform HTTP Header Request Header can be seen above. In this article, the Sec-CH-UA Platform HTTP Header Syntax, Directives, and Uses example will be processed.

What is the Sec-CH-UA Platform HTTP Header?

The Sec-CH-UA Platform HTTP Header user agent client hint request header indicates the platform or operating system on which the user agent is executing. If you wish to use the term “Windows,” for example, you may do so. The low entropy of the Sec-CH-UA Platform HTTP Header indicates that the platform is the correct choice. As long as it is not prohibited by a user agent policy, it will be sent by default.

What is the Syntax of the Sec-CH-UA Platform HTTP Header?

The Sec-CH-UA Platform HTTP Header has only one value for its syntax. The syntax using the Sec-CH-UA Platform HTTP Header is written below.

Sec-CH-UA-Platform: <platform>

What is the Directive of Sec-CH-UA Platform HTTP Header?

There is only one directive for the Sec-CH-UA Platform HTTP Header and that is the platform. It is one of the following   for “Android”, “Chrome OS”, “iOS”, “Linux”, “macOS”, “Windows”, or “Unknown”. The example directives for the Sec-CH-UA Platform HTTP Header are written below.

If the browser is running on a macOS computer, it might add the following header to all requests.

Sec-CH-UA-Platform: "macOS"

How to use the Sec-CH-UA Platform HTTP Header?

If you want to know what operating system or platform the user agent is using, the Sec-CH-UA Platform HTTP Header user agent client hint request header provides such information. As an example, you could say “Windows” if that’s what you want.

You can tell when the platform is right for you by looking at the Sec-CH-UA Platform HTTP Header. It will be sent by default if a policy for user agents does not prohibit it.

Examples of Sec-CH-UA Platform HTTP Header Use

An example of the Sec-CH-UA Platform HTTP Header is written below. 

If the browser is running on a WindowsOS computer, it might add the following header to all requests.

Sec-CH-UA-Platform: "windowsOS"

What is the Specification Document for Sec-CH-UA Platform HTTP Header?

There is only one specification document for the Sec-CH-UA-Platform HTTP Header which is the User-Agent Client Hints. The User-Agent Client Hints Article 3.7 mentions the Sec-CH-UA-Platform HTTP Header as the header field and informs the definition and uses of the Sec-CH-UA-Platform HTTP Header. Additionally, this article discusses the Sec-CH-UA Platform HTTP Header’s examples and values.

What is the type of Sec-CH-UA Platform HTTP Header?

Request Headers is a type of Sec-CH-UA Platform HTTP header because the user agent client hint request header tells you what platform or operating system the user agent is running on, so you can figure out what it is.

What are the similar HTTP Headers to the Sec-CH-UA Platform HTTP Header?

The similar HTTP Headers to the Sec-CH-UA Platform HTTP Header are listed below.

  • HTTP Client hints: Client Hints are a set of HTTP request header fields that a server can ask for from a client in order to learn more about the device, network, user, and user-agent-specific preferences. It’s like the Sec-CH-UA Platform HTTP Header, which tells you what platform or operating system the user agent is running on, just like it does.
  • User-Agent Client Hints API: To make it easier for developers to expose browser and platform information, the User-Agent Client Hints API extends the Client Hints API. Similar to the Sec-CH-UA Platform HTTP Header, which provides information on the platform or operating system running the user agent. 
  • Accept-CH HTTP Header: Using the Accept-CH header, a server can indicate which client hints headers should be included in subsequent requests. Similar to the Sec-CH-UA Platform HTTP Header, which provides information on the platform or operating system running the user agent.
  • HTTP caching: Reusing previously fetched resources can significantly enhance the performance of websites and applications. Similar to the Sec-CH-UA Platform HTTP Header, which provides information on the platform or operating system running the user agent.

Which Browsers Support Sec-CH-UA-Platform HTTP Header? 

There are multiple browsers that support Sec-CH-UA-Platform HTTP Header. The following browsers are listed below.

  • Chrome Browser is compatible e with the Sec-CH-UA-Platform HTTP Header
  • Edge Browser is compatible e with the Sec-CH-UA-Platform HTTP Header
  • Opera Browser is compatible e with the Sec-CH-UA-Platform HTTP Header
  • WebView Android Browser is compatible e with the Sec-CH-UA-Platform HTTP Header
  • Chrome Android Browser is compatible e with the Sec-CH-UA-Platform HTTP Header
  • Opera Android Browser is compatible e with the Sec-CH-UA-Platform HTTP Header
  • Samsung Internet Browser is compatible e with the Sec-CH-UA-Platform HTTP Header

You can see an image that shows cross-browsers compatibility of Sec-CH-UA-Platform HTTP Headers below.

Sec-CH-UA-Platform HTTP Header
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