JWT Decoder
Inspect JSON Web Tokens: decode header, payload claims, expiration dates, and verify structure.
How to Use JWT Decoder
Paste your encoded JWT string (header.payload.signature).
Inspect the decoded Header, Payload claims, and Expiration status.
View human-readable dates for exp, iat, and nbf timestamps.
Frequently Asked Questions
Is my secret key or token transmitted over the network?
No. The entire decoding process happens in your browser's local JavaScript environment. No tokens leave your machine.
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