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JWT Decoder

Decode and inspect JSON Web Tokens

Your data never leaves your device
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Frequently Asked Questions

  • What is a JWT?

    A JSON Web Token (JWT) is a compact, URL-safe token format used for authentication and information exchange. It consists of a header, payload, and signature.

  • Does this tool verify the signature?

    This tool decodes and displays the JWT contents but does not verify the cryptographic signature, as that requires the secret key or public key.