GroupDocs.Watermark (nuget): GroupDocs.Watermark for .NET is a powerful document watermarking API to add image and text watermarks, search and remove watermarks from various image and document formats like Word, Excel, PowerPoint, Visio, PDF, TIFF, JPG and many others.
Keywords: watermark|add-watermark|remove-watermark|search-watermark|clean-watermark|image-watermark|text-watermark|annotation|XObject|DOC|DOCX|XLS|PPT|PPTX|VSDX|ODS|ODT|PDF|EML|MSG|BMP|JPEG|JPEG2000|PNG|GIF|TIFF|WEBP|EMF|WMF