Groupdocs.watermark for .NET is a powerful API for managing watermarks in the various documents formats such as PDF, DOCX/DOC/RTF, PPTX/PPT, XLSX/XLS, JPG, PNG, TIFF, GIF and many others....Parser Product Solution GroupDocs.Watermark Product Solution GroupDocs...GroupDocs Documentation / GroupDocs.Watermark Product Family / GroupDocs...