Password Generator – Strong & Secure Passwords

This generator uses the Web Crypto API's crypto.getRandomValues() function, which generates cryptographically secure random numbers. This is the same standard used by professional security software. The passwords are generated entirely in your browser — nothing is sent to any server, making it completely private and secure.

For maximum security, use a password with 20+ characters that includes uppercase, lowercase, numbers and symbols, with no repeating characters and no ambiguous characters. Use the maximum entropy setting. Alternatively, a passphrase with 6+ random words is often even more secure while being easier to remember.

A passphrase is a sequence of random words (e.g., "correct-horse-battery-staple"). Passphrases are often more secure than traditional passwords because their length (number of total characters) creates astronomical entropy, while being significantly easier for humans to remember. A 4-word passphrase with a separator typically has equivalent security to a 12-16 character random password.

Ambiguous characters are those that look similar to each other, like the letter "O" and the number "0", the letter "l" (lowercase L) and the number "1" and the letter "I" (uppercase i). Excluding these reduces the chance of confusion when reading or typing the password manually, at a small cost to total entropy.

The Bulk mode generates up to 100 passwords at once with the same settings. Each password is independently generated using cryptographic randomness. You can copy individual passwords or download all of them as a .txt file. This is useful for system administrators, developers, or anyone who needs to set up multiple accounts at once.

Password strength is calculated based on multiple factors: length (longer is stronger), character variety (using uppercase, lowercase, numbers and symbols), absence of common patterns and dictionary words, no sequential characters, and estimated entropy (bits of randomness). The score from 0–100 reflects all these factors combined into a single measure.