Password Leak & Strength Checker
Check password strength, entropy, and estimated crack time — and see if it matches a known leaked password.
Security Analysis Report
About this tool
A weak password is one of the most common ways accounts get compromised. As you type, this tool analyzes your password's length, character variety, and entropy to estimate how long it would realistically take an attacker to brute-force it — from instant to centuries.
It also checks the password against a list of extremely common leaked passwords (like 123456 or password123) and warns you immediately if there's a match, since those are the first passwords any attacker tries.
Reading the results
The four checkmarks — length, uppercase, digits, and special characters — show exactly what's missing from a stronger password. Everything runs locally in your browser; your password is never sent anywhere.