Secure Password Generator

// Secure Password Generator

Generate strong, random passwords using cryptographically secure randomness. Everything runs in your browser — no data leaves your device.

Very Strong103 bits

Length16

Uppercase (A-Z)Lowercase (a-z)Numbers (0-9)Symbols (!@#$...)Exclude ambiguous (0O, l1I)

Why You Need Strong Passwords

Weak passwords remain the leading cause of account breaches. Attackers use credential stuffing — testing leaked username/password pairs from one breach against other services — to gain access to accounts where people reuse passwords. A single compromised password can cascade across your email, banking, and social media accounts.

This generator uses the Web Crypto API's crypto.getRandomValues(), a cryptographically secure random number generator built into your browser. Unlike Math.random(), which produces predictable pseudo-random numbers, crypto.getRandomValues() draws from your operating system's entropy pool, making the output truly unpredictable.

Best Practices for Password Security

Use a different password for every account. Store them in a password manager like Bitwarden, 1Password, or KeePass — never in a spreadsheet or sticky note. Enable two-factor authentication (2FA) wherever possible, preferably with an authenticator app rather than SMS.

FAQ

Why shouldn't I create passwords myself?

Humans are bad at generating randomness. We tend to use patterns, dictionary words, and predictable substitutions (like @ for a). A machine-generated password with true randomness is exponentially harder to crack.

How long should my password be?

At least 16 characters for important accounts. Each additional character multiplies the time needed to brute-force your password. A 20-character random password with mixed character types would take billions of years to crack with current technology.

Is this generator safe to use?

Yes. The password is generated entirely in your browser using the Web Crypto API. Nothing is sent to our servers — you can verify this by disconnecting from the internet and generating a password.

What is a password manager and do I need one?

A password manager securely stores all your passwords in an encrypted vault, protected by one master password. It lets you use unique, strong passwords for every account without having to memorize them. Yes, you should use one.

Should I include symbols in my password?

Yes. Including uppercase, lowercase, numbers, and symbols maximizes the character pool, which directly increases entropy. A 16-character password with all character types has significantly more possible combinations than one with only lowercase letters.