Cryptographically Secure

JWT Secret Key Generator

Generate cryptographically secure random secret keys for JWT tokens. Support for multiple algorithms including HS256, HS384, HS512, and custom lengths.

Secure

Cryptographically secure random generation

Multiple Algorithms

HS256, HS384, HS512 and custom lengths

Multiple Formats

Base64, Hex, and Raw output formats

Client-Side

Keys never leave your browser

Generation Options

No keys generated

Algorithm Recommendations

HS256: 256-bit key. Suitable for most applications. Good balance of security and performance.
HS384: 384-bit key. Higher security for sensitive applications.
HS512: 512-bit key. Maximum security. Recommended for high-security environments.

Best Practices

  • Never share your secret key publicly
  • Store keys in environment variables, not in code
  • Use different keys for different environments
  • Rotate keys periodically for enhanced security
  • Use HS512 for maximum security requirements