In web technology and networking, Content-Type is an HTTP header used to specify the exact media format (MIME type) of the data being transmitted between a client and a server. It tells the receiving browser or application exactly how to parse, render, and handle the raw stream of bytes it receives. Structure of Content-Type
A Content-Type header is composed of a top-level type and a subtype, separated by a forward slash. It can also include optional parameters like character encoding: Content-Type: type/subtype; parameter=value
Type: The general category of the data (e.g., text, image, application).
Subtype: The specific format or file type (e.g., html, png, json).
Parameter: Extra configuration details, most commonly the charset (character set). Example: Content-Type: text/html; charset=UTF-8 How it Works in HTTP Messages
In Responses (Server to Client): When you load a webpage, the server sends back a file along with a Content-Type header. If it sends image/jpeg, the browser renders an image. If it sends text/html, the browser renders it as a structured webpage.
In Requests (Client to Server): When you submit data via POST, PUT, or PATCH requests (like filling out an online form or uploading a file), your client uses the Content-Type header to tell the server how to read the payload. Common Examples of Content-Type Values
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