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Vérificateur de Robustesse de Mot de Passe

Vérifiez la robustesse de votre mot de passe et obtenez des suggestions d'amélioration. Gratuit, rapide et entièrement dans votre navigateur, sans inscription.

Password Strength Analyzer

Enter Password

Breach check tip: For full breach database checking, visit HaveIBeenPwned . They use k-anonymity — only the first 5 chars of the SHA-1 hash are sent, never your full password.All analysis on this page is 100% local — nothing is transmitted.

Entropy Explained

Password entropy measures unpredictability in bits. Each additional bit doubles the search space. 60+ bits is good; 80+ is excellent for most accounts; 100+ for secrets that must last decades.

Crack Time Scenarios

Online attacks are throttled by servers (~100–10K/sec). Offline attacks on leaked MD5/NTLM hashes can exceed 100 billion guesses per second with a modern GPU cluster.

Use a Password Manager

The best password is a long, random, unique one for every site. Password managers (Bitwarden, 1Password, KeePass) generate and store them so you only remember one master password.

Passphrases Work Well

4–5 random words (coral-lamp-river-toast) are memorable, long, and have high entropy — often stronger than a complex 10-character password.

Common Patterns to Avoid

Keyboard walks (qwerty, 1234), dictionary words, name + birth year, and l33t substitutions (p@ssw0rd) are all in standard attacker wordlists.

Check Breaches (HIBP)

HaveIBeenPwned lets you check if your password appeared in known data breaches. Only a partial SHA-1 hash is sent — your full password never leaves your browser.