Use GroupDocs.Watermark for .NET API to add, search or remove watermarks from images and business document formats in C#, ASP.NET or any type of .NET application.
GroupDocs.Watermark is a .NET API to digitally add text and image watermarks on most common and popular document formats including Microsoft Office (Word, Excel, PowerPoint, Visio), OpenDocument, PDF, Email and images. The smart searching feature is very useful in terms of locating hard-to-find watermarks and remove them from documents. With GroupDocs.Watermark library – secure your sensitive documents from unauthorized access.
Add and remove text or image watermarks (XObject, Artifact, Annotation) to PDF
Add and remove text or image watermarks (Shape) to Word, PowerPoint and diagram file formats
Add and remove text or image watermarks (Shape, Header & Footer) to Excel spreadsheet file formats
Add text or image watermarks to raster image formats
Add and remove text and image watermarks to email formats
Search and add watermarks to images within a document
Extract watermark objects information
Search watermarks in document based on text formatting (font name, style, size, color etc)
GroupDocs watermarking API supports .NET and Mono frameworks and enables developers to build feature rich applications on Microsoft Windows Desktop, Azure, Server and Linux operating systems.
Support and Learning Resources
Documentation – Access developers guide, features overview, installation, limitations and configurations settings
Source Code – Work with functional source code examples, showcases and plugins
Download API directly or via Nuget package manager