> generate | secure | protect <
// Generate cryptographically secure passwords instantly
Cryptographic Random
Uses crypto.getRandomValues() for true cryptographic randomness. No weak Math.random() shortcuts.
Fully Configurable
Choose length, character sets, and exclude ambiguous characters. Fine-tune every password to your requirements.
Bulk Generation
Generate up to 20 passwords at once. Perfect for provisioning accounts or creating credential sets.
// ABOUT PASSWORD GENERATION
How It Works:
This generator uses the Web Crypto API's crypto.getRandomValues() method, a CSPRNG (Cryptographically Secure Pseudo-Random Number Generator). Each character is selected from the configured character pool using cryptographically random 32-bit unsigned integers, ensuring uniform distribution and unpredictability.
Example:
Kj9#mP2$xR7!nQ4&
Why Use a Password Generator:
- >CSPRNG via crypto.getRandomValues() API
- >Entropy calculation shows actual password strength
- >Configurable character pools for any policy
- >Bulk generation for provisioning workflows
- >100% client-side — passwords never leave your browser
>> frequently asked questions
Q: Why should I use a password generator?
A: Humans are bad at creating random passwords. We tend to use predictable patterns, dictionary words, and personal information. A cryptographic password generator produces truly random, high-entropy passwords that are resistant to brute-force and dictionary attacks.
Q: How secure are these passwords?
A: Very secure. This tool uses crypto.getRandomValues(), a CSPRNG built into your browser's Web Crypto API. The passwords are generated entirely on your device and never transmitted anywhere. The entropy display shows the actual mathematical strength of each password.
Q: What is password entropy?
A: Entropy measures password strength in bits. It is calculated as log2(pool_size^length). A 16-character password using uppercase, lowercase, numbers, and symbols (~88 characters) has about 103 bits of entropy. Generally, 80+ bits is considered strong for most purposes.
Q: What is the recommended password length?
A: For most accounts, 16 characters or more is recommended. For high-security applications, use 20-32 characters. The minimum acceptable length for any password is 12 characters. Longer passwords with diverse character sets provide exponentially more security.
Q: Passphrase vs random password — which is better?
A: Both can be secure. Random passwords are shorter but harder to remember. Passphrases (like 'correct-horse-battery-staple') are longer but more memorable. For machine-generated credentials, random passwords are preferred. For passwords you must type regularly, consider a passphrase with a password manager.