Password Generator
Generate strong, random passwords using your browser’s crypto API.
Generated with the Web Crypto API entirely in your browser. Nothing here is ever sent to a server, logged, or stored.
Generated password
Strength
About 103 bits of entropy from a 88-character set.
For informational and educational purposes only — not professional or technical advice, and not a substitute for consulting a qualified professional about your specific situation. TrueMeasureKit is not liable for decisions made based on these results. See our Terms of Service.
Why this generator is safe to use
Most "random" values in JavaScript come from Math.random(), which is fast but not cryptographically secure — its internal state can, in principle, be predicted. This generator uses crypto.getRandomValues() instead, the same cryptographically secure source browsers use for encryption keys, combined with rejection sampling so every character is chosen with truly uniform probability instead of a subtly biased one. The password is generated on your device and never transmitted anywhere — not even to TrueMeasureKit's own servers, because there isn't one involved in this calculation at all.
Frequently asked questions
Why use the browser's crypto API instead of Math.random()?
Math.random() is not cryptographically secure and can be predictable in some implementations. The Web Crypto API's getRandomValues() is designed for security-sensitive randomness, which is what a password generator needs.
Does excluding similar characters (like 0/O or 1/l) weaken the password?
Negligibly — removing a handful of characters from a large pool barely reduces entropy, while making the password much easier to type or read correctly when it matters (like typing it on a phone or reading it off a screen).