Add Watermark in PowerPoint Presentation in C# | Watermark PowerPoint
This guide explains how to add text watermarks to PowerPoint presentations using GroupDocs.Conversion Cloud SDK for .NET while keeping slide content and layout intact.
Add Text Watermark to PDF in C# | Insert Watermark into PDF using .NET REST API
This article demonstrates how to add a text watermark to PDF files using GroupDocs.Watermark Cloud SDK for .NET. Learn to protect your documents, add stamps, and insert visible text watermarks programmatically or online using the REST API.
