How to encrypt a PDF on Mac OS Preview, the Mac OS application that opens most popular file types, has many bonus features for modifying documents. One of them is encrypting PDF files.

How Does PDF Encryption Work?. Adobe's PDF format allows you to combine text and images into portable document files which are easy to share with employees, print or store for later use.

Small businesses working with sensitive PDF documents may choose to encrypt those documents. An encrypted PDF is password protected, which means you cannot open the document unless you type in the ...

In this article I’ll concentrate on describing how to create virtual encrypted disks, which enable you to protect specific sensitive documents without having to encrypt your entire drive.

Any help will be appreciated!” The quickest way to do this is to ZIP the PDF file and protect the ZIP file, or use Microsoft Office’s built-in encryption tools to create a password.

Have a private document on your desktop OS? Here's how to keep it secure on Linux, MacOS, and Windows.