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OTP Generador

Genera contraseñas de un solo uso (OTP) TOTP/HOTP. Generador online gratuito en tu navegador.

OTP Generador is a free online seguridad tool that works right in your browser — whatever you enter is processed locally and never sent to a server. No installation, no signup; works on both phone and desktop, ready to use instantly.

Todas las herramientas de seguridad se ejecutan localmente sin enviar datos al exterior. La generación de contraseñas, el cálculo de hashes y otras operaciones sensibles se realizan completamente en tu navegador.

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How to use

  1. 1 Abre la página de la herramienta OTP Generador.
  2. 2 Pega tu texto, URL o datos en el área de entrada.
  3. 3 Elige el modo de operación y los parámetros.
  4. 4 Ejecuta la herramienta y revisa el resultado.
  5. 5 Copia o descarga el resultado.

Why we built this tool

When testing security tools, sending sensitive data like passwords or tokens to a remote server defeats the purpose. We built this tool to run entirely in your browser using the Web Crypto API — your data never leaves your device.

About OTP Generador: what you should know

DevOps engineers and security-conscious developers who rotate secrets and verify integrity as part of their daily workflow. Whether you are checking a file checksum, generating an API key, or validating a token, doing it locally avoids sending sensitive data through an external service.

Key features

  • No Server, No Storage — Every operation runs entirely in your browser. Secrets, hashes, and tokens are never transmitted or logged by any third-party service.
  • Batch-Friendly Workflow — Process multiple inputs at once when you need more than one value. Each result is independent so you can copy what you need without confusion.
  • Configurable Parameters — Adjust length, algorithm, or character set on the fly to match your specific requirements. Whether you need a short token or a long hash, the tool adapts.

Common use cases

  • Rotating Secrets After a Breach — When a key or password may have been exposed, generate a fresh replacement here and update your configs — all without exposing the new value to a third party.
  • Building Lookup Tables for Testing — Generate a batch of hashes or tokens to populate a test database. Each value is independent, so tests do not interfere with each other.

Preguntas frecuentes

¿Es gratuita esta herramienta?

Sí, completamente gratuita y sin registro.

¿Puedo usarla en el móvil?

Sí, funciona en navegadores móviles con soporte táctil.

¿A qué categoría pertenece?

Seguridad

¿Son seguras las herramientas de verificación?

Completamente seguras. Todas las verificaciones se ejecutan localmente en tu navegador sin enviar solicitudes ni datos al exterior.

What hash algorithms are supported for checksum generation?

ToolPure supports MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hash algorithms. All hashing is performed locally using the Web Crypto API, ensuring your data never leaves your browser.

Can I generate and validate JWT tokens?

Yes, you can decode JWT tokens to inspect header and payload, and generate new JWT tokens with custom claims. The tool supports HS256, HS384, and HS512 signing algorithms.

Are password generation tools truly random?

Yes, password generation uses the Web Crypto API getRandomValues() function, which provides cryptographically secure random numbers. Generated passwords are not stored or transmitted anywhere.

Is OTP Generador safe? Is my data uploaded or stored?

Yes. OTP Generador is a pure front-end tool: whatever you type or paste is processed only in your browser's memory and never sent to a server. It disappears as soon as you refresh or close the page.

🔒 Privacy & Security：All processing happens locally in your browser. Files are never uploaded or stored.

🔒 Privacy: All processing happens locally in your browser. Your files and data never leave your device — no upload, no server, no tracking.

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