Strong Password Generator — Secure & Offline
Cryptographically secure random passwords, generated on your device. Adjust length and character sets, check the strength meter, copy, done.
Generated locally with your browser's cryptographic random generator (crypto.getRandomValues). Passwords never leave this page.
What Makes a Password Strong?
Length beats complexity. Every added character multiplies the number of guesses an attacker needs. A random 16-character password outlasts an 8-character one by a factor of trillions.
Random beats memorable. Patterns, names, and dates are the first things cracking tools try. True randomness — like this generator produces — has no shortcuts.
Unique beats reused. The most common way accounts get hacked is credential stuffing: a password leaked from one site tried on every other site. One password per account stops it cold.
Full explainer with crack-time tables: What makes a strong password in 2026.
Frequently Asked Questions
Is it safe to generate a password on a website?▼
It is here, because generation happens entirely on your device using your browser’s cryptographic random number generator (crypto.getRandomValues). Nothing is transmitted, logged, or stored — you can even go offline first and it still works.
How long should my password be?▼
At least 16 characters for anything important. Length matters more than complexity: each extra character multiplies the work an attacker must do, which is why a 16-character password is astronomically stronger than an 8-character one with symbols.
What do the entropy bits mean?▼
Entropy measures unpredictability. Around 45 bits is weak, 65+ is strong, and 90+ is effectively uncrackable with current hardware. The meter updates as you change length and character sets.
Why exclude look-alike characters?▼
Characters like I, l, 1, O, and 0 are easy to confuse when reading or typing a password manually — for example on a TV or game console. Enable that option when you will need to type the password by hand.
Should I use a password manager?▼
Yes. Generate a unique password per site and store them in a password manager, so one breached site never compromises your other accounts. You only need to memorize the manager’s master password.