Aspose.Diagram, is a pure .NET API for working with the Microsoft Visio Object Model.It provides Visio file formats conversions to images, PDF, Html, XML and XAML formats. Popular file formats supported include VSD, VSS, VDW, VST, VSDX, VSSX, VSTX, VSDM, VSTM, and VSSM....to manipulate diagrams and convert files than third party applications...other formats, such as PDF, HTML, various image formats or others...