HTTP Header Parser

Turn a pasted block of raw HTTP response headers into a readable, aligned table.

Your raw headers

Status line: —

Fields found: —

—

Parsing reads the text you paste and never opens a network connection.

Copy the raw response headers from your browser developer tools or a command line client.
Paste them into the box and press Parse to align every field.
Check the status line, the field count and any repeated name warnings.

Common questions about the free online http header parser.

It reads a pasted block of response header lines and prints each field name and value in one aligned, easy to scan table.

Open the browser developer tools, choose the network tab, select a request and copy the header block from the response section.

No. The parser only reads the text you paste, so no request is ever sent and nothing leaves your browser.

A line that starts with a space or a tab is treated as a continuation and joined onto the value of the field above it.

Every occurrence is listed in order and the repeated names are reported in a summary line below the table.

Yes. A request line such as GET followed by a path is detected and shown as a note below the parsed fields.

No. Everything stays inside the page while you work, and closing the tab removes it.

Yes, the parser is responsive and works in any modern browser on a desktop, a tablet or a phone.

Last updated: October 10, 2026