Password Generator

Version 1.3, Last Updated: 3rd September 2018

Requires Chrome, Firefox, Safari or IE >= 11

This script generates passwords using your web browsers built-in cryptographically secure pseudo-random number generator. It generates unbiased random numbers within a range using rejection sampling and bit masking. All password generation occurs locally in your web browser and no passwords are ever transmitted over the network (it also supports offline mode if you aren't connected to the network) - all passwords are guaranteed to contain at least one character from each character set.

Try and use the longest password possible, as the longer the password, the longer it takes for hackers to try and crack it (if it was ever leaked and assuming it was hashed securely). The password lengths are coloured using a traffic light scheme - green is considered good (>= 128 bits of entropy), orange is average (>= 64 bits of entropy) and red should be avoided (< 64 bits of entropy) - hovering over the length with your mouse will reveal the amount of entropy each provides.

If you require passwords of different lengths then you also have the option of specifying a combination of lengths as parameters (e.g. "?48,32,24").

Designed, Developed and Copyright © 2015-2016 Chris Mason <chris@netnix.org>.