C# .NET Visio Diagram API for creating, editing, and processing VSD, VSX, VTX, Vsdx, and other Visio files. Convert diagrams to PDF, PNG & HTML formats....Visio file formats such as VSD, VSDX, VTX, VDX, VSX, VSSX, VTSX,...Independently converting the VSD and VSDX Visio diagram formats to PDF...