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Generate strong, truly random passwords with a live strength meter — created using cryptographic randomness and never transmitted.
Password Generator
Create strong, random passwords with a live strength meter — generated with cryptographic randomness, never sent anywhere.
Set your rules
Choose a length and toggle character types — uppercase, lowercase, numbers, symbols — plus options like excluding similar or ambiguous characters.
Generate
Click Generate. Passwords are built with the browser's cryptographic random generator, guaranteeing at least one character from each selected set.
Copy or download
Copy a password with one click, or generate up to 50 at once and download them all. Nothing is ever sent anywhere.
They use the Web Crypto API (crypto.getRandomValues) with unbiased rejection sampling — not Math.random — so every character is cryptographically random and evenly distributed.
It calculates entropy in bits from your length and character pool, then estimates how long a password would resist a fast offline attack. More length and more character types mean higher entropy.
Yes. ‘Exclude similar’ removes look-alikes such as i, l, 1, L, o, 0 and O, while ‘Exclude ambiguous symbols’ keeps only clearly typed symbols — useful for passwords you’ll read or type by hand.
Never. Generation happens entirely in your browser with no network calls and no storage — closing the tab erases everything.
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A strong password is long and unpredictable. This generator builds passwords using the browser’s cryptographic random number generator with unbiased sampling, so the output is genuinely random rather than guessable. You control length and character composition, can exclude look-alike or ambiguous characters, and see a live entropy-based strength rating with an estimated crack time. Generate one password or a batch of up to 50, then copy or download — all without anything leaving your device.
- Cryptographically secure — powered by the Web Crypto API with unbiased rejection sampling.
- Full control — adjustable length (4–128) and toggles for every character type.
- Readable options — exclude similar characters or ambiguous symbols for hand-typed passwords.
- Live strength meter — entropy in bits plus an estimated time-to-crack.
- Batch generation — create up to 50 at once and copy all or download as a file.
The password generator is fully client-side and makes zero network requests. Passwords are produced in your browser using crypto.getRandomValues and are never transmitted, logged, or stored — they exist only on your screen until you close the tab.