JWT Decoder
Decode a JWT to inspect its header, payload and expiry — entirely in your browser.
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Payload
How to use
- Paste your JWT.
- The header and payload are decoded and pretty-printed.
- If there's an expiry claim, you'll see whether the token is still valid.
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FAQ
Does this verify the signature?
No — decoding only reveals the contents. Verifying the signature needs the secret or public key, which stays on your server.
Is my token sent anywhere?
No — decoding happens entirely in your browser, so your token is never transmitted.
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