Password Generator
Generate strong, random passwords in seconds. All processing runs in your browser — no data is ever sent to a server.
Character types
103 bits of entropy
About Password Generator
The Password Generator creates cryptographically secure random passwords using your browser's built-in crypto.getRandomValues() API — the same randomness source used by professional security software. Customize password length (8–128 characters), choose character types (uppercase, lowercase, numbers, symbols), exclude ambiguous characters, and generate up to 20 passwords at once. Nothing is ever sent to a server.
Use Cases
- →Create strong, unique passwords for new account registrations
- →Generate secure API keys, tokens, or secret strings for development
- →Bulk-generate temporary passwords for a team or group of users
- →Create a master password for a password manager or encrypted vault
Tips
- ✓Use 16+ characters — each extra character multiplies the number of possible combinations exponentially
- ✓Enable all character types to maximize entropy and resist dictionary attacks
- ✓Use "Exclude ambiguous characters" when you need to read or type the password manually
- ✓Never reuse passwords — generate a unique one for every account
Frequently Asked Questions
Yes. This tool uses crypto.getRandomValues(), which is a cryptographically secure pseudo-random number generator (CSPRNG) provided by the browser. Unlike Math.random(), crypto.getRandomValues() produces values that cannot be guessed or reproduced.
No. All password generation happens entirely in your browser. No data is transmitted to any server, logged, or stored anywhere except your own browser memory.
Entropy measures how hard a password is to brute-force. A 16-character password using all character types has roughly 100+ bits of entropy — meaning an attacker would need to try 2^100 combinations on average.
For most online accounts, 16 characters is a solid minimum. For high-value targets — email, banking, password manager master password — use 20 or more characters.
Yes, if the site allows it. Each additional character type increases the possible combinations exponentially. A 16-character password using only lowercase letters has about 75 bits of entropy; adding all types pushes it to 100+ bits.
Ambiguous characters are visually similar pairs: 0 (zero) and O (letter O), 1 (one) and l (lowercase L). Excluding them makes passwords easier to type or read without making them significantly weaker.