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JWT Decoder

Paste a JSON Web Token to read its header and payload as formatted JSON, plus claims like issuer and expiry — instantly, privately.

How to use

  1. Paste a JWT (three dot-separated parts).
  2. The header and payload decode into readable JSON instantly.
  3. Read claims like iss, sub, iat and exp.
  4. Note the expiry — this tool does not verify the signature.

FAQ

Why is my decoded payload showing numbers instead of text?

JWT payloads use base64url with Unicode-safe decoding. This tool decodes UTF-8 correctly, so normal text appears as text and dates as readable timestamps.

Is it safe to paste a real token here?

Yes — decoding happens locally in your browser and nothing is sent to a server.

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More FAQs

Are these URL tools free?

Yes, free and unlimited with no signup.

Is my data uploaded?

No. Everything runs in your browser and nothing is sent to a server.

Related searches

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