Add Watermark to PDF Pro - If you have work under the form of PDF files and plan to share them or upload them to the Internet, you might want to do something in regard to copyright. If you are happy with just letting everybody know whose work is that, a watermark will suffice. Applying a watermark is relatively easy, and Add Watermark to PDF can achieve that in a couple of seconds. What's New * not available Title Release: Add.Watermark.to.PDF.Pro.5.1.3.8 Developer: Home Page License: ShareWare OS: Windows Download: Add Watermark to PDF Pro 5.1.3.8 (25 MB)