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<strong>JWT Decoder</strong> is a tool that allows you to decode JSON Web Tokens (JWT) in your browser and check their contents. It is useful for API debugging, authentication flow investigation, security auditing, and more. It does not perform signature verification, so a private key is not required. Since it operates entirely on the client side, tokens are never sent to the server.

All processing is completed within your browser. The entered JWT token is never sent to the server. However, JWTs may contain sensitive information. Please exercise caution when handling actual production tokens on a public network.

Initial release. Implemented decoding of Header, Payload, and Signature, expiry check, and JSON pretty printing.

JWT Decoder

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