Password Generator
Generate strong, secure passwords instantly. Nothing leaves your browser.
Passwords are generated entirely in your browser using your device’s secure random number generator — nothing is sent to any server or logged.
How this password generator calculates strengthHow it’s calculated
Every character in the password is chosen using window.crypto.getRandomValues(), the same cryptographically secure random number source browsers use for security-sensitive operations — not the weaker Math.random() function some simpler generators rely on. Each character is pulled independently from whichever character sets you’ve enabled (uppercase, lowercase, numbers, symbols), so there’s no predictable pattern to the result.
The strength badge is a simple scoring model based on two factors that most password-strength research agrees matter most: length and character variety. A password gains a point for reaching 8 characters, another for reaching 14, another for using at least 3 character types, and a final point for using all 4 — giving a rough Weak-to-Excellent scale. It’s a useful sanity check, not a full entropy calculation.
Use this whenever you’re setting up a new account, replacing an old reused password, or generating an API key or secret for a project — anywhere you want a genuinely random string rather than something memorable (and therefore guessable).
Password Generator — FAQ
Is this password generator actually secure?
Yes. It uses your browser’s built-in cryptographically secure random number generator (the Web Crypto API), the same source used for security-sensitive browser operations, rather than a simple pseudo-random function.
Are generated passwords stored or sent anywhere?
No. Password generation happens entirely on your device. Nothing is transmitted over the network, logged, or stored once you leave or refresh the page.
What actually makes a password “strong”?
Length matters more than complexity tricks — a longer password is exponentially harder to brute-force than a short one with substituted symbols. Using a mix of character types (upper, lower, numbers, symbols) adds further strength on top of length.
Should I still use a password manager?
Yes. A generator like this is great for creating a strong password on the spot, but a password manager is what lets you use a different strong password for every account without having to remember each one.