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ToolsDeveloperJWT Decoder

JWT Decoder

Decode JWT tokens and inspect header, payload and expiry. No signature verification.

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How to use JWT Decoder

  1. 1Paste your JWT token (the full eyJ... string) into the input field.
  2. 2The header and payload are decoded from Base64URL and displayed as formatted JSON.
  3. 3If the payload contains an "exp" claim, the expiry datetime is shown in human-readable format.
  4. 4Note: this tool decodes only — it does not verify the signature.