HTTP Header Parser – Free Online Utility

Header	Value
Status Line	HTTP/1.1 200 OK
Date	Mon, 27 Jul 2009 12:28:53 GMT
Server	Apache
Last-Modified	Wed, 22 Jul 2009 19:15:56 GMT
ETag	"34aa387-d-1568eb00"
Accept-Ranges	bytes
Content-Length	51
Vary	Accept-Encoding
Content-Type	text/plain

Understanding HTTP Headers

HTTP headers are the silent messengers of the web. Every time you load a page or call an API, dozens of these key-value pairs are exchanged to negotiate content types, handle security tokens, manage caching, and report server status. While crucial, the raw text format of headers can be difficult to read quickly.

Our HTTP Header Parser takes this raw data and organizes it into a clean, searchable table. This is an essential utility for developers debugging API integrations or security researchers auditing server responses.

Common Headers and Their Meanings

Content-Type: Tells the client what kind of data is being sent (e.g., application/json).
Authorization: Carries credentials for authenticating a request.
Set-Cookie: Instructs the browser to store a piece of state.
Cache-Control: Defines how long the response can be cached by the browser or proxies.

Frequently Asked Questions

HTTP headers allow the client and the server to pass additional information with an HTTP request or response. They contain metadata like content type, date, server information, and caching policies.

Raw header strings can be hard to read, especially when copied from browser developer tools or terminal output. A parser turns them into a clean table for easy inspection.

Yes, it can parse any set of key-value pairs following the standard header format (Key: Value).

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