Décodeur JWT

Decode a JSON Web Token (JWT) online, free. View the header and payload instantly. Client-side only, your token never leaves your browser.

Comment utiliser Décodeur JWT

  1. Paste your JSON Web Token (it starts with "eyJ").
  2. Click "Decode".
  3. Read the decoded header and payload.

Questions fréquentes

Does this verify the signature?

No, it only decodes the header and payload for inspection. It does not validate the signature or trust the token.

Is my token sent anywhere?

No. Decoding happens entirely in your browser; your token never leaves your device.

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