Générateur de mot de passe
Choose length and character classes. The generator draws from the browser’s cryptographic random source when available.
Cette page traduit la version anglaise. Le moteur de calcul est identique.
Réponse rapide
It builds a string from the selected alphabet using secure randomness in the client.
Exemple: 16 characters with upper, lower, digits and symbols is a common default; longer is stronger if you can store it.
Les calculs suivent la formule indiquée sur cette page ; l’arrondi et les unités peuvent modifier le dernier chiffre. Traitez le résultat comme une estimation éducative.
* Estimation. Les montants réels peuvent varier selon les hypothèses saisies.
Ce que fait ce calculateur
It builds a string from the selected alphabet using secure randomness in the client.
À qui s’adresse-t-il
Anyone creating a new password who wants the generation to stay on-device.
Comment le calcul fonctionne
A cryptographically strong RNG picks indices into the allowed character set until the requested length is reached.
Formule
Uniform draws from the selected alphabet. No password is derived from your name or the page URL.
Hypothèses
- The browser provides crypto.getRandomValues or an equivalent.
- You store the result in a password manager.
Limites
- Does not check whether a password has appeared in a public breach.
- A short alphabet reduces strength even at long lengths.
Comment utiliser cet outil
- 1Set the length.
- 2Toggle character classes.
- 3Copy the result into a password manager — not into email.
FAQ
- Do you store the password?
- Generation is client-side. We do not need the password to render the page.
- Is longer always better?
- Length helps, but a tiny character set or a reused password still fails.