JWT Decoder & Inspector
Paste a JSON Web Token to decode its header and payload and inspect the claims. Decoding happens entirely in your browser — the token never leaves your device. (This tool decodes only; it does not verify the signature, which requires the signing secret or key.)
Encoded token Awaiting input
Header
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Payload
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Claims
Standard claims (exp, iat, nbf, iss, aud…) appear here.
A JWT has three Base64URL parts separated by dots: header.payload.signature.
Times shown for exp, iat and nbf are converted from Unix seconds to your local time.