Free · Check how hard a password is to guess
Password Strength Checker
Get an honest 0 to 4 score, safe advice, and a local crack-time estimate.
- zxcvbn-ts local estimate
- Password never leaves this tab
- Password-free reports
Check password
The checker loads on this device. Your password is never uploaded or put in a report.
1
Enter a test choiceThe field stays in this tab
Private by designRuns with zxcvbn-ts in this browser
2
Read the safe resultReady when you are
Your score will appear here
The result shows strength and patterns, never the password itself.
Three simple steps
How to use it
- Type the password on this device.
- Read the score and guess estimate.
- Use the advice without sharing the password.
Your password stays on this device
zxcvbn-ts checks the password inside this browser tab. Bookify does not upload, save, or log it. Results and downloads leave the password out. Crack times are estimates, not guarantees.