Are these passwords truly random?

Yes. They use the Web Crypto API's getRandomValues, which provides cryptographically secure random numbers suitable for generating high-entropy secrets.

What length should I use?

At least 16 characters for general use, 20+ for high-security accounts. Each additional character multiplies the search space by the alphabet size.

Which character types should I include?

Include uppercase, lowercase, numbers, and symbols for maximum entropy. Some sites reject symbols; in that case, use a longer alphanumeric password.

What does 'exclude similar characters' do?

It removes visually confusable characters: l, 1, I, O, 0. Useful when passwords must be read or typed manually.

Is the generated password stored anywhere?

No. The password exists only in your browser memory. It is not saved to localStorage, history, or sent to any server. Copy it to your password manager immediately.

Why was my generated password rejected by a website?

Some sites restrict certain symbols or length. Check the site's password policy and adjust the character types or length accordingly, then regenerate.

Générateur de mots de passe

Generate strong, cryptographically secure random passwords. Gratuit, privé et 100% côté client.

param.lengthparam.uppercaseparam.lowercaseparam.numbersparam.symbolsparam.excludeSimilarparam.minEachType

Entrée

Essayer un exemple:

Sortie

Local only

Historique récent

Aucun historique

Utilisation

Set the desired password length.
Toggle character types: uppercase, lowercase, numbers, symbols.
Optionally exclude similar characters (l, 1, I, O, 0).
Copy the generated password.

Tâches utilisant cet outil

Générer a cryptographically secure random password

Créer un high-entropy mot de passe utilisant un cryptographically sûr random generator, avec control sur longueur et caractère sets.

TÂCHE

Utiliser un cryptographically sûr pseudorandom nombre generator

CSPRNGs produce sortie indistinguishable de vrai randomness. Apprendre le correct APIs et pourquoi Math.random() est forbidden en sécurité contexts.

TÂCHE

Questions fréquentes

Are these passwords truly random?: Yes. They use the Web Crypto API's getRandomValues, which provides cryptographically secure random numbers suitable for generating high-entropy secrets.
What length should I use?: At least 16 characters for general use, 20+ for high-security accounts. Each additional character multiplies the search space by the alphabet size.
Which character types should I include?: Include uppercase, lowercase, numbers, and symbols for maximum entropy. Some sites reject symbols; in that case, use a longer alphanumeric password.
Que fait 'exclude similar characters' ?: It removes visually confusable characters: l, 1, I, O, 0. Useful when passwords must be read or typed manually.
Is the generated password stored anywhere?: No. The password exists only in your browser memory. It is not saved to localStorage, history, or sent to any server. Copy it to your password manager immediately.
Why was my generated password rejected by a website?: Some sites restrict certain symbols or length. Check the site's password policy and adjust the character types or length accordingly, then regenerate.