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.
Nothing in yet

Paste, drop, or type to begin. Everything stays on this device.

Next door in Web

- Cookie Analyzer (/web/cookie)
- HTTP Status Reference (/web/http-status)
All web 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