How to Use the ShieldPass Password Strength & Breach Checker

ShieldPass is a free browser-based tool that helps you create and evaluate strong passwords. It works entirely on your device and can also check whether a password has appeared in known data breaches. Follow the steps below to use it.

1. Open the App

Download or open the HTML file in any modern browser such as Chrome, Edge, Firefox, or Safari. No installation is required and it runs completely offline unless you enable the breach check.

2. Enter a Password

Type any password into the password field. As you type, ShieldPass calculates an entropy score, displays a strength rating from 0 to 4, and estimates how long a powerful computer would take to crack the password by brute force.

3. Read the Feedback

Below the meter you will see an entropy value and a list of issues if the password is weak. For example it may warn about short length, repeated characters, or common patterns. A higher entropy value means a stronger password.

4. Optional Breach Check

If you keep the breach check switch turned on, ShieldPass will query the Have I Been Pwned database using a privacy-preserving hash method. Only the first five characters of a one-way hash of your password are sent, never the password itself. If the password appears in known leaks the app will display the number of times it has been found.

5. Generate a Strong Password

Click the “Generate strong password” button to instantly create a long random password. This password is created in your browser using secure random values. You can copy it to your clipboard and store it in a password manager.

6. Copy or Clear

Use the “Copy” button to copy the current password or generated password to your clipboard. Use the “Clear” button to erase the field if you want to start over.

7. Stay Secure

A very high crack time or a perfect score means the password is strong against brute force attacks, but it is still important to keep each password unique for every account and to store it securely in a reputable password manager.

ShieldPass provides quick feedback and a safe environment to test and generate passwords. Because it can run offline, your passwords never leave your device unless you enable the optional breach check.

Download ShieldPass