Password Generator
Generate strong, secure passwords instantly with cryptographically secure randomness — 100% in your browser.
Quick answer
Password generator — create strong, random passwords instantly using your browser's cryptographic random number generator, with custom length, character sets and a live strength meter. Built for anyone replacing weak or reused passwords. Passwords are generated on your device and never stored or transmitted.
Every password is pulled from your browser's own secure crypto source — window.crypto, not Math.random — so nothing is weaker than what your browser already trusts. Nothing you generate is ever sent anywhere or stored.
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Secure entropy source: window.crypto
Strength: Good
How to create a strong random password
Set the length and character sets
Choose the password length and which characters to include — upper case, lower case, digits and symbols.
Check the strength
The strength meter rates the current password; regenerate (or lengthen it) until it is strong.
Copy the password
Copy it to your clipboard and save it in a password manager — it is only ever stored on your own device.
Key features
Cryptographically random
Uses the Web Crypto API — the same entropy source browsers use for security keys.
Full control
Choose length and character sets (upper, lower, digits, symbols).
Live strength meter
See how strong the current password is before you copy it.
Supported formats
- Input: your length and character-set choices
- Output: a random password string, copied to your clipboard
Privacy and security
Limitations
- The generator creates passwords; storing them safely is up to you — use a password manager.
- Random passwords are hard to memorize by design; passphrases are an option if you need memorable.
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Frequently Asked Questions
Is it safe to generate passwords online?
Yes. Because this generator runs 100% in your browser, the random bytes are drawn from your device's own secure crypto source (window.crypto) and never touch a server. Your password is generated, displayed, and copied entirely on your machine.
Are my passwords stored anywhere?
No. Passwords are generated in memory, disappear the moment you leave or refresh, and are never recorded, logged, or transmitted. There is no backend, no account, and no analytics data tied to the characters you generate.
Are the passwords really random?
Yes — they are generated with window.crypto.getRandomValues(), the same cryptographically secure random source your browser uses for TLS and other security-critical work. This is far stronger than Math.random(), which is what most non-secure generators rely on.
How should I store my generated passwords?
Once you copy a password, save it in a password manager (or a very trusted location) immediately. We keep nothing, so it's up to you to store the one you choose.
Why do you exclude ambiguous characters?
Characters like 0/O, 1/l/I can look identical in many fonts, which makes them easy to misread when retyping. Turning this on swaps them out for safer substitutes like '2', '8' and lowercase 'z'.
What makes a password strong?
Length matters more than almost anything else. A longer password using a mix of uppercase, lowercase, numbers and symbols is far harder to guess or brute-force. Our strength meter reflects both length and character variety.