JWT Tool

All JWT processing happens locally in your browser. No tokens or keys are sent to the server.

Encoded Token

Header

{"alg": "HS256", "typ": "JWT"}

Payload

{"sub": "1234567890", "name": "John Doe", "iat": 1516239022}

Signature

Secret / Key

Encoded Output

Fill in the header, payload, and key to generate a JWT.

Algorithm

Header

Payload

Secret / Key