Proteger con contraseña

Añade una contraseña necesaria para abrir el PDF.

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01
Subir
Sube uno o varios archivos.
02
Proteger con contraseña
Añade una contraseña necesaria para abrir el PDF.
03
Descargar
Guárdelo en su dispositivo, Drive o Dropbox.
Flujo de trabajo PDF en línea

Password-protect PDFs entirely in the browser — encryption never leaves your device.

Añade una contraseña a tu PDF para controlar quién puede abrirlo o editarlo. Cifra PDFs instantáneamente en el navegador. Gratuito, seguro, sin cuenta.

Add an open-password before sharing sensitive documents by email.

Control who can print or edit the file by setting a permissions password.

Encryption runs entirely in your browser — the password is never sent to a server.

Is Proteger con contraseña free to use?

Yes. Proteger con contraseña is free for personal use, does not require an account and does not add a watermark to your exported PDF.

Are my files safe in Proteger con contraseña?

Core PDF actions run in the browser whenever possible. When a conversion needs a worker, files are processed through encrypted temporary storage and cleaned automatically.

Can I use Proteger con contraseña on mobile?

Yes. The tool works in modern mobile and desktop browsers, so you can upload, adjust and download PDFs without installing a desktop app.