PDFdu Add Watermark can add text and image watermark to PDF . .
PDFdu Add Watermark is a quick and easy-to-use PDF tool that you can batch add image and text watermarks to Acrobat PDF documents. It just takes four simple steps to finish the job in seconds. To stamp a watermark on your PDF files is to mark you PDF documents as your copyrighted property. The watermark can be stamped behind virtually every elements of a PDF file.And this software doesn't depend on any print driver so it will NOT install any print driver on your computer. It does not require any Adobe products.