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

Can I verify the JWT signature?

The tool decodes and displays the header and payload. For full signature verification, you would need the secret key.

JWT Decoder - Online JWT Token Parser

How to Use

Paste the complete JWT token string into the input box.
Click the "Decode JWT" button to decode.
View the decoded Header and Payload contents in the output area.

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About JWT Decoder

JWT Decoder is a free online tool for decoding JSON Web Tokens (JWT). JWT is an open standard (RFC 7519) that defines a compact and self-contained way to securely transmit information between parties. JWT is commonly used for authentication and authorization.

JWT consists of three parts: Header, Payload, and Signature, separated by dots. This tool decodes the Header and Payload parts, helping developers quickly view token information such as user IDs, expiration times, and issuers. The entire decoding process runs locally in the browser without sending the token to any server, ensuring your token security.