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Check Password Strength Before Signing Up

Test whether a password is strong enough before creating a new account on any website or app.

Sin necesidad de registro

Your password is never sent to any server.

Account Security tips

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A good password for a new account should be at least 12 characters and score "Strong" here. This means an estimated crack time in the billions of years.

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Use a passphrase — 4 random words like "coffee-river-lamp-moon" — it's easy to remember, has high entropy, and passes all strength checks.

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Avoid using personal info: names, birthdays, favourite teams. These are guessable through social engineering even if the password looks complex.

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Use a unique password for every account. A password manager generates and stores strong passwords for you so you only remember one master password.

Cómo funciona

1
Introducir
Enter your data into the tool above. Everything stays local to your browser.
2
Procesar
The tool processes your data instantly in your browser using JavaScript. No server, no waiting.
3
Descargar
Get your result instantly. Nothing is stored after you leave the page — complete privacy.

¿Por qué usar el nuestro?

Completamente gratis — sin costes ocultos, nunca
Sin cuenta, correo ni registro requerido
Los archivos nunca salen de tu dispositivo
Sin límite de tamaño de archivo en absoluto
Sin marcas de agua en ningún resultado

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