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HTTP Headers Analyzer

Paste raw request or response headers to get a plain-English explanation of each one, auth and caching detection, and a security header audit. Everything runs in your browser — nothing is uploaded.

About this tool

Paste headers straight from your browser's devtools, curl -v, or a proxy log. Each header is matched against a built-in reference of ~50 common HTTP headers and explained in a sentence or two; the tool also summarises the auth scheme, content type, and caching setup, and — for responses — audits the six security headers every production site should send, with copy-ready lines for any that are missing.

Your headers are parsed entirely in this page with plain JavaScript — there is no server, no upload, and no tracking of tool inputs, so it is safe to paste headers that contain cookies or tokens.

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Found this useful? 113 free, browser-only tools by Yuvrajsinh Jadav — an engineer who ships production AI systems. No account, nothing sent anywhere.
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