HTTP headers parser · Guide
HTTP Headers Parser Online: Structure Raw Headers
An HTTP headers parser takes a block of raw headers — copied from a request, response or log — and turns it into a clean key/value structure. This guide explains how it helps with API debugging.
From raw text to structure
Raw headers are just lines of "Name: value". The parser splits each into a key and value, groups repeated headers into arrays so nothing is lost, and outputs structured JSON you can read or reuse.
It runs locally, so authorization headers and tokens in the input stay on your machine.
Why structure them
Scanning a dozen raw header lines for one value is tedious. A structured view makes it easy to find a content type, a cache directive, or a custom header during debugging.
Frequently asked questions
How are repeated headers handled?
Headers that appear more than once are grouped into an array under one key, so duplicate values are preserved rather than overwritten.
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Open the free browser-based HTTP headers parser and apply what you just read — no sign-up, runs locally.
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