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JWT Decoder

Paste a JSON Web Token to instantly decode its header, payload and signature — with human-readable expiry and issued-at timestamps plus a live validity check. Decoding happens entirely in your browser; tokens are never sent anywhere.

Privacy note. JSON Web Tokens are only signed, not encrypted, so decoding reveals every claim they contain. Decoding runs entirely in your browser, but never paste live production tokens or credentials here — use throwaway or test tokens.

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