You can digitally sign a PDF in several different ways, including Adobe Acrobat, Apple's Preview app, and mobile apps, among other options.

To password protect a PDF in Adobe Acrobat Reader, you'll need the paid Pro version, which starts at $14.99 a month.

Wondershare has given PDFelement a huge upgrade, with new AI tools that speed up and simplify how you work with PDFs ...

PDF Agile is a simple Windows PDF editor that you buy once and use forever. It edits text and images, converts to and from ...