PDF 文件在日常办公和学习中经常被使用，而添加水印可以有效保护文件版权或增加文件的标识性。本文中简鹿办公将详细介绍如何使用 PDF-XChange ...

PDF-XChange Editor is a comprehensive PDF editor that allows you to create, view, edit, annotate, and digitally sign PDF documents with ease. With advanced features like OCR, document security ...

In the PDF-XChange Pro 2012 bundle, you get a complete PDF reader, writer, and editor. Tracker’s PDF-XChange Pro 2012 ($74) bundles a number of PDF-XChange apps that together attempt to create a ...