Does it validate that headers are correctly formatted?

Malformed header lines are flagged, helping you catch a formatting mistake rather than silently misparsing it.

Can I parse headers from a curl command's -v output?

Yes, paste in raw header text from any source, including curl's verbose output, and it extracts and structures the headers.

Does it decode any special header values, or just list them as-is?

Headers are presented in a readable structured list — decoding specific header value formats (like cookies) may need a more specialized tool depending on what you're inspecting.

Does HTTP Header Parser upload my files to a server?

No. HTTP Header Parser runs entirely in your browser using on-device processing, your files never leave your device.

HTTP Header Parser

Parse raw HTTP headers into a readable, structured list.

Runs in your browser

Paste raw HTTP headers

Status/request line

HTTP/1.1 200 OK

4 headers

Content-Typeapplication/json; charset=utf-8

Cache-Controlno-cache

Content-Length1234

Set-Cookiesession=abc123; HttpOnly

About this tool

Raw HTTP headers pasted as a block of text are hard to scan quickly, especially with many headers present, and manually picking out specific header values from the raw text is slower than it needs to be. This tool parses raw HTTP headers into a readable, structured list, making it easy to scan and find specific headers instead of reading through raw text line by line.

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