Your files stay on your device

HTTP header parser

Paste-in request/response headers with repeated-header preservation.
ClearRaw headers

Paste-only: this page never fetches a URL: remote header viewers stay blocked until a proxy spec exists.
Paste, drop, or type to begin. Everything stays on this device.

More web & auth tools

- Cookie analyzer (/web/cookie)
- HTTP status reference (/web/http-status)
All web & auth tools (/web)

Canonical HTML: https://nutter.tools/web/headers/
Markdown version: https://nutter.tools/web/headers/index.md
Plain-text version: https://nutter.tools/web/headers/index.txt
Agent index: https://nutter.tools/llms.txt