Generador de contraseñas

Genera contraseñas fuertes y aleatorias con longitud y tipos de caracteres personalizables. Gratis, sin registro.

Longitud:16

Cantidad::

Mayúsculas (A-Z)Minúsculas (a-z)Números (0-9)Símbolos (!@#$...)

Haz clic en "Generar contraseñas" para crear contraseñas seguras

Acerca de la seguridad de contraseñas

Las contraseñas seguras deben tener al menos 12 caracteres e incluir una combinación de letras mayúsculas, letras minúsculas, números y símbolos. Este generador utiliza generación de números aleatorios criptográficamente segura (crypto.getRandomValues) para máxima seguridad.

Frequently Asked Questions

How long should passwords be?

Security experts recommend at least 12-16 characters for strong passwords. This tool defaults to 16 characters, which provides excellent protection. Longer passwords (20+ characters) are even better, but consider usability. The password strength indicator will show you how strong your generated passwords are.

Do I need special characters?

Special characters (!@#$%^&*) add complexity and significantly increase entropy. Many systems require them. This tool includes them by default, but you can disable them if a service doesn't support special characters. Generally, keep them enabled for maximum security.

Should I use a password manager?

Absolutely. Password managers securely store and auto-fill strong passwords, so you don't have to remember them. This is the best practice for managing multiple accounts. Use a tool like this generator to create strong passwords, then let your password manager store them.

What is password entropy?

Entropy measures randomness and password strength. More character types (uppercase, lowercase, numbers, symbols) and longer passwords increase entropy. For example, a 12-character password with all four character types has much higher entropy than a 12-character lowercase-only password, making it harder to crack.

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Cómo usar

Set your desired password length (recommended: 16+)
Choose character types: uppercase, lowercase, numbers, symbols
Set how many passwords to generate
Click 'Generate' and copy your preferred password

Casos de uso

Creating strong passwords for new accounts
Generating API keys and secrets
Creating temporary access codes
Generating secure tokens for applications

Preguntas frecuentes

Are the passwords truly random?

Yes. This tool uses the Web Crypto API (crypto.getRandomValues), which provides cryptographically secure random values.

What makes a strong password?

Strong passwords are at least 12 characters long, use a mix of uppercase, lowercase, numbers, and symbols, and avoid dictionary words or personal information.

Are my passwords stored anywhere?

No. Passwords are generated entirely in your browser and never sent to any server. There is no logging or storage.