This extension creates passwords that push the bounds of length past the ability of conventional password crackers.This extension allows you to create very long passwords with custom as well as predefined character sets that work very well with password managers(such as LastPass/KeePass/PasswordSafe). Be responsible and use passwords that are longer than conventional hash crackers can ever attempt to crack.
Any password over 125 characters is beyond any hash cracker's ability, and with randomly generated passwords, even if one site does not store your password properly, it won't lead to a compromise of any of your other accounts.
Reviews of bwallHatesTwits Password Generator extension