HTTP Headers Decoder
Paste raw HTTP request or response headers to get a structured table with plain-English explanations of each field.
100% client-side · no upload
| Header | Value |
|---|
How to use
- Copy headers from your browser DevTools (Network tab → select a request → Headers panel), from
curl -Ioutput, or from a proxy like Charles or Burp. - Paste them into the text area above.
- Click Decode headers to see each header in a table with its description.
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常见问题
- Is this HTTP headers decoder free?
- Yes, completely free with no signup and no usage limits.
- Does my data leave my device?
- No. All parsing runs in JavaScript inside your browser. Nothing is sent to any server.
- Does it work on mobile?
- Yes. The tool is mobile-first and works on iPhone Safari and Android Chrome.