How do I password-protect a PDF for free?

Go to https://www.fileflip.org/tools/protect-pdf, upload your PDF, set a password, and download the protected file.

Is the PDF uploaded to a server?

No. Encryption happens in your browser. Your document never leaves your device.

FileFlip uses AES password encryption for PDF security.

Yes. No registration or watermarks.

Protege tu PDF con contraseña online gratis. Establece permisos para propietario y usuario. Sin subir archivos — la cifrado ocurre en tu navegador.

1Subir

2Proteger

3Descargar

Arrastra tu PDF aquí o haz clic para subir