This article will help, if you want to add watermark to images inside a document then it can be possible using GroupDocs.Watermark....Assembly Product Solution GroupDocs...
Learn about ProjectManagementConvertOptions class for Project Management file formats (MPP, MPT, MPX, XER) in GroupDocs.Conversion for .NET....Assembly Product Solution GroupDocs...
Learn this article and check how to load and convert password-protected documents using GroupDocs.Conversion for .NET API....Assembly Product Solution GroupDocs...
The page describes how to add text field annotation to a document programmatically using GroupDocs.Annotation for .NET....Assembly Product Solution GroupDocs...
Follow this guide and learn how to convert documents to HTML format with fixed layout, zoom and other customizations using GroupDocs.Conversion for .NET....Assembly Product Solution GroupDocs...
The page describes document annotations of different types and how to add annotations to a document using GroupDocs.Annotation API....Assembly Product Solution GroupDocs...
Learn this article and check how to load and convert CAD documents with advanced options using GroupDocs.Conversion for Java API....Assembly Product Solution GroupDocs...