Strong Password Generator
Generate secure, random passwords with a Strong Password Generator. Choose the length and character types — every password is created in your browser and never transmitted.
More presets
Jump to another preset — each opens its own page ready to go:
How to use the Strong Password Generator
- Set the length and which character types to include.
- A password is generated instantly — regenerate for a new one.
- Copy it to your clipboard.
About the Strong Password Generator
A Strong Password Generator creates unpredictable passwords using a cryptographically secure random generator (the Web Crypto API), not the predictable Math.random. Longer passwords with mixed character types have far more entropy, making them exponentially harder to crack.
Because generation happens entirely in your browser, the password is never sent over the network or logged — it exists only on your device until you copy it. Use a unique password per account and keep them in a password manager.
The Strong Password Generator leans on the single biggest lever for resistance to brute-force: a long password drawn from a wide alphabet. Each extra character multiplies the number of guesses an attacker must try, so a 16-character string mixing upper, lower, digits and symbols pushes the search space into the quintillions — turning a crack that takes seconds for a short word into one that takes geological time. Reach for this variant when a service enforces complexity rules, or when you're protecting a high-value account like email, banking or a password-manager master key, where length and class diversity matter more than memorability.
Frequently asked questions
Are these passwords secure and random?
Yes. They are generated with the Web Crypto secure random generator in your browser — not the weak Math.random — and nothing is transmitted.
Is the password sent anywhere?
No. It is created entirely in your browser and never uploaded or logged; it exists only on your device.
How long should my password be?
At least 16 characters with mixed types is a strong default; longer is better. The strength meter shows the entropy as you adjust the options.
Can I choose which characters to include?
Yes — toggle uppercase, lowercase, numbers and symbols, and set the length, to match each site’s rules.
Is a long password better than a short one packed with symbols?
Length usually wins: adding characters grows the search space exponentially, so a longer 16-character mix beats a short 8-character one even if the short one is symbol-heavy. Keep both the length and a full mix of classes high for the strongest result.