Security Analyzer
Analyze your password strength with deep heuristic complexity checks.
Start typing to see analysis
About Password Strength
Strength checking estimates how resistant a password is to guessing, based on its length, variety and whether it follows patterns attackers already try first. It is a sanity check before you commit to one.
How to use it
- Type a candidate password.
- Read the strength assessment.
- Lengthen or randomise it if the result is weak.
Worth knowing
Do not paste a password you already use anywhere. Test a variation, or better, use a generated password stored in a password manager rather than one you invented.
Common questions
- Why is my clever substitution rated weak?
- Replacing letters with digits is the first thing cracking tools try. Length and genuine randomness beat cleverness every time.
- Does a strong password make me safe?
- It is one layer. Reuse across sites, phishing and missing two-factor authentication defeat strong passwords routinely.