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littlekit.app
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HTTP header parser

Parse pasted HTTP headers, preserve repeated fields, and suppress sensitive values by default.

One Name: value header per line. Duplicates remain visible because they can be meaningful.
Authorization, cookies and API-key headers stay redacted unless you explicitly opt in.
Parsed header preview106 characters
Content-Type: application/json
Authorization: [redacted]
Cache-Control: no-cache
X-Request-Id: req_demo_42
Processed on your device

How it works & useful details

Local-only workspace

This tool converts or inspects pasted text in your browser. It never sends a request, opens a URL, uploads a HAR, or stores your input.

Header parsing

Each non-empty line must use a visible HTTP field name followed by a colon. Repeated names are retained because their meaning is header-specific.