JWT Tools

JWT Generator

Create custom JWT tokens with configurable headers and claims

Header
Payload
Secret
Generated Token
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNzc5NDc0NTIzfQ.eW91ci0yNTYtYml0LXNlY3JldA
Demo implementation with a mock signature — not for production tokens.
Common Claims
  • iss (Issuer): Who issued the token
  • sub (Subject): Who the token refers to
  • aud (Audience): Who the token is intended for
  • exp (Expiration Time): When the token expires
  • nbf (Not Before Time): When the token becomes valid
  • iat (Issued At): When the token was issued
  • jti (JWT ID): Unique identifier for the token
About JWT Generation

This is a demonstration tool for learning about JWT structure and claims. For production use, consider these security best practices:

  • Use a secure secret key with sufficient entropy
  • Include expiration times in your tokens
  • Use specific audiences and issuers
  • Consider using asymmetric keys (RS256) for production
  • Validate all claims on the server side