Is my password sent to a server?

No, encryption happens locally on your machine.

Can it be opened in standard PDF viewers?

Yes, compatible with Adobe Acrobat and all viewers.

PDF Tools•Free Online Tool

Secure your confidential PDF files with password protection and encryption entirely in your browser.

100% Free & Private

Encrypt your sensitive PDF files with a secure password to prevent unauthorized viewing or tampering.

Select PDF to Password-Protect

Choose the file to protect.

Enter your secure password.

Download your encrypted PDF.

Combine multiple PDF documents into a single unified PDF file 100% inside your browser.

Stamp custom text watermarks onto PDF pages with angle, opacity, and color controls.

Remove password protection and permissions restrictions from authorized PDF files.

Extract specific pages or split multi-page PDF documents into individual files privately in your browser.