JWT Token Manager

Generate, decode, verify, and analyze JSON Web Tokens

Generate JWT Token

Create a new JWT token with custom payload and settings

Algorithm

Expiry

Secret Key

Payload (JSON)

JWT Reference

Standard Claims

iss: Issuer - who created the token

sub: Subject - who the token is about

aud: Audience - who the token is for

exp: Expiration time (Unix timestamp)

nbf: Not before time (Unix timestamp)

iat: Issued at time (Unix timestamp)

jti: JWT ID - unique identifier

Common Algorithms

HS256: HMAC using SHA-256 (symmetric)

HS384: HMAC using SHA-384 (symmetric)

HS512: HMAC using SHA-512 (symmetric)

RS256: RSA using SHA-256 (asymmetric)

ES256: ECDSA using SHA-256 (asymmetric)

none: No signature (insecure)

Security Best Practices

• Use strong secret keys (minimum 256 bits)

• Set appropriate expiration times

• Validate all claims on the server

• Use HTTPS in production

• Never store sensitive data in payload

• Implement proper key rotation

Common Use Cases

• Authentication tokens

• API access tokens

• Single sign-on (SSO)

• Information exchange

• Temporary access grants

• Microservices communication

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MIT License

Free to use, modify, and distribute. Open source software for everyone.

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