JWT parser
Decode a JSON Web Token and inspect its header, payload and claim dates.
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About the jwt parser
Decodes the header and payload of a JSON Web Token and lays out the registered claims, converting the exp, iat and nbf timestamps into readable dates and flagging whether the token has already expired.
Frequently asked questions
Does this verify the signature?
No, and that distinction matters. Decoding only reveals what the token claims. Never make an authorisation decision from decoded contents — verify the signature against the issuer's key on the server.
Is it safe to paste a token here?
The decoding happens locally and nothing is transmitted. Still treat a live token like a password: it grants whatever access it was issued for until it expires.