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JWT Debugger

Decode JSON Web Tokens to inspect the header and payload, and verify the signature — all client-side, so secrets stay local.

How to use JWT Debugger

  1. Paste your JWT into the token box.
  2. Read the decoded header and payload, including expiry.
  3. Optionally add the secret to verify the signature.

Frequently asked questions

Is it safe to paste my JWT here?
Yes — decoding and verification happen entirely in your browser; the token and secret are never sent anywhere.

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