Password Strength Tester

Attack Type	Crack Time
Online/Throttling
Online/No Throttling
Offline/Slow
Offline/Fast

Help
About
License

This tool allows you to test the strength of passwords.

Usage

Type a password in the text field on the left, and the estimated password strength, suggestions, and estimated crack times will be shown below.

Crack Times

Online/Throttling: Online attack on a service that rate-limits password authentication attempts.
Online/No Throttling: Online attack on a service that doesn't rate-limit, or where an attacker has outsmarted rate-limiting.
Offline/Slow: Offline attack. Assumes multiple attackers, proper user-unique salting, and a slow hash function with moderate work factor, such as bcrypt, scrypt, or PBKDF2.
Offline/Fast: Offline attack with user-unique salting but a fast hash function like SHA-1, SHA-256, or MD5. A wide range of reasonable numbers anywhere from one billion to one trillion guesses per second, depending on number of cores and machines, and ballparking at 10B/sec.

Password strength tester.

Features

Simple.
Open Source: MIT-licensed.
Self-Contained: No external connections for assets, social media sites, analytics, etc.
Can be used offline or even locally. Grab the source code from the GitHub repository and go wild!

Built With

zxcvbn : Password strength estimator.
Bulma : Open source CSS framework.
Font Awesome : Open source font icons.

Author

Paul Duncan
https://pablotron.org/
https://github.com/pablotron

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.