Password Generator
Create strong, random passwords with full control and an entropy score.
The Password Generator creates strong random passwords with crypto-grade randomness, right in your browser. Choose the length, tick which character sets to include, optionally filter out look-alike characters (I, l, 1, O, 0), and get a password with its strength rated in bits of entropy.
Password strength is really a math problem: every extra character and every larger character set multiplies the guesses needed. An 8-character lowercase password has about 38 bits of entropy and can fall in minutes; a 16-character mixed password pushes past 90 bits — beyond what any practical attacker can brute-force. The tool shows that score so you can see exactly what your settings buy you.
Security notes: use a unique password per site, and let a password manager generate and store them — this tool is best for generating the master password and emergency keys. Everything runs locally; nothing is transmitted.
How to use the Password Generator
- Drag the length slider (8+ characters recommended).
- Tick character sets: lowercase, uppercase, digits, symbols.
- Optionally exclude ambiguous characters like 0/O or 1/l.
- Click 'Generate password'.
- Check the entropy rating, then copy the password.
Frequently asked questions
How long should a password be?
For most accounts, 12–16 characters of mixed characters is a strong baseline — roughly 80–100 bits of entropy. Longer is better where supported; length adds more strength than complexity alone.
What does 'bits of entropy' mean?
It measures how many guesses an attacker would need on average: entropy = length × log2(character set size). Each bit doubles the work — 80 bits is beyond brute-force reach, while 30 bits can be cracked in seconds.
Is it safe to use a browser password generator?
Yes for this one — randomness comes from the browser's cryptographic API and nothing is sent anywhere. The main risk is reusing passwords across sites, which no generator can fix; that is the password manager's job.
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