REST APIs and Free Apps for documents & images conversion on .NET device. Convert between PDF, Microsoft Word, Excel, Visio Stencil File, Visio Drawing XML File, PPTX, Project, HTML, email and images using our Free Apps....convert between Visio Stencil File (VSS) & Visio Drawing XML File...VSS to VTX VSS to VDX VSS to VSSX VSS to VSTX VSS to VSDM VSS...