Aspose.Diagram for .NET is a specialized API designed to work with Microsoft Visio files. It allows developers to create, manipulate & convert native Visio file formats from within ASP.NET web applications, web services, Windows applications and Mono. Developers can create diagrams from scratch as well as easily load existing files and manipulate the elements of the diagram to export the result in other Visio formats, images or fixed-layout formats.

This .NET Diagram API is an alternative to the Microsoft Visio Object Model and provides better performance. It makes use of the advanced functionality of Visio Services to manipulate Visio documents on a server. The API is extensible, easy to use, compact and provides common functionality so that developers have to write less code when performing common tasks.