🔒 Proteger PDF
Proteger PDF con contraseña — gratis, rápido y privado.
Drop PDF file(s) here
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Cómo Proteger PDF
Sube tus archivos arrastrándolos o haciendo clic en el área de carga.
Haz clic en el botón para procesar tus archivos instantáneamente en tu navegador.
¡Tu archivo procesado se descargará automáticamente. No necesitas registrarte!
Performance & Details
Uses AES encryption via pdf-lib. Password is applied locally — it never touches any server. Encrypted PDFs open in any standard PDF reader (Adobe, Preview, Chrome).
All processing uses pdf-lib (open-source). Files stay in your browser — zero server uploads. Last verified: May 2026.
Proteger PDF — Disponible en todo el país
Proteger PDF — Available Across Europe
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Get unlimited access to all tools, batch processing, and priority support for just $5/month.
Go Pro — $5/monthProteger PDF — Frequently Asked Questions
What type of encryption is used?▼
We apply AES encryption, the industry standard used by banks and governments worldwide.
What happens if I forget the password?▼
There is no way to recover a forgotten password from an encrypted PDF. Keep your password in a safe place.
Can I set different permissions (print, copy)?▼
Currently we support open-password protection. Advanced permission controls are on our roadmap.
Will password protection slow down the PDF?▼
No — encrypted PDFs open just as fast as regular ones, just requiring a password first.
Is this tool suitable for legal or financial documents?▼
Yes — password protection adds a strong security layer for contracts, tax documents, and financial records.