JWT Decoder

A JSON Web Token (JWT) is a compact, URL-safe token used for authentication and information exchange between applications.

Paste your JWT token into the input box and click "Decode". The tool will display the header and payload information.

This tool decodes the header and payload. The signature cannot be decoded (it's cryptographically signed). Use jwt.io for signature verification.

Yes. All decoding happens in your browser. Your token is never sent to any server.

The tool automatically checks the expiration date (exp claim) and shows you how long until the token expires.