Password Strength Checker — Test Your Password
Password strength checker: estimate a password’s entropy and rating as you type, entirely in your browser.
Passwords are generated on your device with Web Crypto — never sent anywhere.Try: Your password=type a password to test → 17 bits, Weak
How to use
Paste a password to see its estimated entropy in bits and a strength rating. The check runs locally — your password is not uploaded. Use it to compare ideas before saving one.
FAQ
What makes a password strong?
Length first, then variety. A long passphrase with mixed character types beats a short complex one. Pair it with two-factor authentication where you can.