Random String Generator
Generate secure random strings for passwords, tokens, and IDs. Uses cryptographic randomness.
Crypto Secure
Uses Web Crypto API
Customizable
Length, charset, count
Batch Generate
Up to 50 at once
100% Private
Nothing leaves browser
Why Use Random String Generation?
Random strings are essential for security. Passwords, API keys, session tokens, and encryption keys all need to be unpredictable to be secure. Our generator uses the Web Crypto API for true cryptographic randomness, not pseudo-random Math.random().
Password Strength Guide
| Use Case | Recommended Length | Character Types |
|---|---|---|
| General Password | 12-16 chars | Mixed case + numbers + symbols |
| High Security | 20+ chars | All character types |
| API Key | 32-64 chars | Alphanumeric (no symbols) |
| PIN Code | 6-8 chars | Numbers only |
| Encryption Key | 32+ chars | All character types |
Security Best Practices
- Never reuse passwords: Use unique passwords for every account
- Longer is better: Each character adds exponentially more security
- Use a password manager: Store complex passwords securely
- Enable 2FA: Add an extra layer beyond just passwords
- Rotate sensitive keys: Change API keys and tokens periodically
Frequently Asked Questions
Is this generator cryptographically secure?
Yes! We use the Web Crypto API which provides true cryptographic randomness, suitable for security applications.
How long should my password be?
At least 12-16 characters for most uses. For high security, use 20+ characters with all character types.
Are my passwords stored?
No! Everything happens in your browser. Nothing is sent to any server or stored anywhere.
What does 'exclude similar' do?
It removes characters that look alike (iIlL1oO0) to avoid confusion when copying manually.