API Key Generator
Generate secure API keys in various formats. Choose from UUID, hex, base64, alphanumeric, or custom prefixed keys.
API Key Best Practices
- Use prefixes to identify key types (live vs test, public vs secret)
- Minimum recommended length is 32 characters for security
- Store API keys securely - never in source code or logs
- Implement key rotation and expiration policies
- Use environment variables or secret management services
API Key Security - Technical Details
API keys are used to authenticate requests to APIs. They should be long enough (32+ characters) to resist brute force attacks, and use cryptographically secure random generation. Prefixes help identify key types and aid in secret scanning.
Command-line Alternative
# Generate random key with openssl
openssl rand -hex 32
# Generate UUID
uuidgen
# Or with Node.js
node -e "console.log(require('crypto').randomBytes(32).toString('hex'))"