Password generator

Presets

About

This password generator generates passwords with a predefined format that are easy to type.

For example, you can create a password with repeating groups of 4 characters and 4 digits.

It also excludes look-alike characters like o/O/0 or l/I/1.

Format

• c lowercase character
• C uppercase character
• d or D digit
• a lowercase vowel (aeiou)
• A uppercase vowel (AEIOU)
• z lowercase consonant (bcdfghjklmnpqrstvwxz)
• Z uppercase consonant (BCDFGHJKLMNPQRSTVWXZ)
• s or S a special character (!@#$%^&*?)

Specifying 4d is the same as dddd.

Security considerations

Using predefined patterns and limiting the character set inevitably makes the password less random and therefore less secure. But when you make your password long enough, this isn't really an issue, because a very long simple password is stronger than a short and complicated one.

This generator uses the Crypto.getRandomValues() API to generate cryptographically strong random choices from the individual character sets.

When this is useful

There are situations where you have to type passwords manually, for example:

• logging in at school computers and library computers
• using remote management consoles
• unlocking encrypted partitions at boot time

So you open your password manager, on your phone or elsewhere, and slowly start typing the password. The groups of characters make it easier to keep parts of the password in your short-term memory and type the password with less effort.