JWT Secret Generator

Generate cryptographically secure keys for your JWT authentication needs with flexible options and instant validation.

Key Features

Secure Generation

Generate JWT secrets up to 256 characters with robust security

Multiple Algorithms

Support for HS256, HS384, and HS512 algorithms

Key History

Track and manage your last 10 generated keys

Client-Side Security

All operations run locally in your browser

Getting Started

Choose Your Algorithm

  • HS256: Standard security
  • HS384: Enhanced security
  • HS512: Maximum security (recommended)

Set Key Length

  • Options: 32, 48, 64, 128, or 256 characters
  • Recommended: 64+ characters for production use

Configure Character Types

  • Lowercase letters (a-z)
  • Uppercase letters (A-Z)
  • Numbers (0-9)
  • Special characters

Security Best Practices

Use HS512 algorithm for maximum security
Generate keys longer than 64 characters
Enable all character types
Regularly rotate your keys
Store keys securely in environment variables
Never share keys in code or repositories

Browser Requirements

  • Modern browser with Web Crypto API support
  • Secure HTTPS connection
  • JavaScript enabled
  • No data sent to servers
  • No analytics or tracking
  • All operations run locally