REST APIs and Free Apps for documents & images conversion on .NET device. Convert between PDF, Microsoft Word, Excel, Visio Stencil File, Portable Document Format File, PPTX, Project, HTML, email and images using our Free Apps....allows you to convert between Visio Stencil File (VSS) & Portable...VSS to VSDM VSS to VSSM VSS to VSTM VSS to PPT VSS to PPS VSS to...