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JWT Decoder

Decode JWT header and payload, with expiry check.

How to use

  1. Paste the JWT.
  2. Header and payload decode instantly.
  3. Check the expiry verdict.

Frequently asked questions

Is the signature verified?

No - decoding shows contents only. Verification requires the secret/key and belongs on your server.

Is it safe to paste tokens here?

Decoding is local, but treat production tokens as secrets - prefer expired or test tokens.

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