JWT Decoder — Decode JSON Web Tokens Online
Decode JWT tokens to see header, payload, and expiry. No signup, no server.
All decoding happens in your browser. Your JWT never leaves your device — no data is sent to any server.
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How to Use JWT Decoder
- Paste your JWT — Paste the full JWT token (header.payload.signature).
- View decoded parts — See header (algorithm), payload (claims), and signature.
- Check expiry — Expiration time is highlighted — shows if token is expired.
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Frequently Asked Questions — JWT Decoder
Is it safe to paste my JWT here?
Yes. The decoding happens entirely in your browser using JavaScript. No data is sent to any server. Your token never leaves your device.
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