We are excited to release GroupDocs.Watermark for .NET API that makes it simple to perform watermarking operations in various document and image formats. The API facilitates you with simple syntax, easy to use methods and a few lines of code to perform any watermarking operation. Using GroupDocs.Watermark, you can add, search, and remove watermark from many popular document and image formats. Continue to read more about the API’s features....existing watermark objects in PowerPoint formats Working with existing...specific to the Word, Excel, Powerpoint, Visio, and PDF formats....