Orlixio

Free browser tool

HTTP Headers Parser

The HTTP headers parser converts raw header text into structured JSON. Paste headers from browser DevTools, cURL output, logs, or API debugging tools and see the status line, header names, and values in a cleaner format.

Headers explain caching, authentication, content negotiation, redirects, rate limits, cookies, and tracing. Parsing them makes it easier to spot duplicates, missing values, and unexpected casing.

HTTP headers parser

Parse raw HTTP headers into structured JSON.

What this tool does

HTTP headers carry metadata about requests and responses. They describe content types, caching rules, authentication challenges, cookies, rate limits, redirects, CORS, and tracing identifiers. Raw copied headers can be noisy, especially when duplicate names appear.

This parser turns pasted header text into structured JSON. It keeps duplicate values, captures a status line when present, and makes the result easier to copy into bug reports or documentation.

Common use cases

Inspect API responses

Parse headers from cURL, browser DevTools, or logs into readable JSON.

Debug caching

Review Cache-Control, ETag, Last-Modified, and CDN headers together.

Check rate limits

Find limit, remaining, and reset headers without scanning raw text.

Example before and after

Structured output makes headers easier to inspect, copy, and compare.

Raw headers

HTTP/2 200
content-type: application/json
x-request-id: abc123

Parsed JSON

{
  "statusLine": "HTTP/2 200",
  "headers": {
    "content-type": "application/json"
  }
}

How to use

  1. Paste raw HTTP headers.
  2. Click Parse Headers.
  3. Review the parsed JSON output.

Common errors

Missing colon

Header lines need a colon between the header name and value.

Ignoring duplicates

Some headers can repeat. A parser should not silently discard repeated values.

Sharing credentials

Authorization and cookie headers can contain sensitive data and should be redacted.

Why use this tool

Debug API response headers.

Inspect caching and rate limit values.

Turn copied headers into structured JSON.

Best practices

Capture status and headers

The status line and headers together explain much more than either alone.

Redact private values

Remove cookies, tokens, and internal identifiers before sharing.

Compare environments

Header differences often explain caching, CORS, and authentication issues.

Related tools

JWT DecodercURL Formatter

Related guides

How to read HTTP headers

HTTP headers carry metadata that explains how an API response should be parsed, cached, authenticated, and traced.

What is cURL used for

cURL is a command-line tool for making network requests, testing APIs, and sharing reproducible request examples.

HTTP status codes explained

HTTP status codes quickly tell you whether a request succeeded, redirected, failed client-side, or failed server-side.

FAQ

Can it parse response status lines?

Yes. If the first line looks like HTTP/1.1 200 OK, it is captured as the status line.

How are duplicate headers handled?

Duplicate header names are grouped into arrays so repeated values are not lost.

Does it make a network request?

No. It only parses pasted text.

Are headers uploaded?

The tool runs in your browser and does not require login, a database, or server-side processing.