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Response

Content-Type

Indicates the media type of the response body, telling the browser how to interpret and display the content.

Syntax

Content-Type: <media-type>; charset=<encoding>

Example

Content-Type: text/html; charset=UTF-8

Description

Content-Type specifies the MIME type and character encoding of the response body. One of the most fundamental HTTP headers.

Consists of a media type (e.g., text/html, application/json) and optionally a charset parameter.

Incorrect Content-Type can cause rendering issues and security vulnerabilities. Always set it explicitly with X-Content-Type-Options: nosniff.

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Related Headers

Connection
Controls whether the network connection stays open after the current transaction finishes.
Content-Disposition
Indicates whether the response should be displayed inline or downloaded as a file attachment.
Content-Encoding
Specifies the compression algorithm applied to the response body, such as gzip or brotli.
Content-Length
Specifies the size of the response body in bytes.
Date
Indicates the date and time at which the response was generated by the server.
ETag
Provides a unique identifier for a specific version of a resource, enabling efficient conditional requests.

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