~/tools$ ./use
JWT Decoder
About this tool
Peek inside any JWT — the header and payload are decoded and pretty-printed, claim timestamps like exp, iat and nbf become human-readable dates, and the signature is shown as a hex fingerprint. Ideal for debugging access tokens.
Frequently asked questions
Does this verify the signature?
No — the signature is shown as a fingerprint only and is not verified. Use a proper JWT library when you need to trust a token.
Which claims are shown?
All of them — the full decoded payload, plus exp, iat and nbf rendered as readable dates when present.