REST APIs and Free Apps for documents & images conversion on .NET device. Convert between PDF, Microsoft Word, Excel, Visio Drawing Template, Visio Stencil XML File, PPTX, Project, HTML, email and images using our Free Apps....convert between Visio Drawing Template (VSTX) & Visio Stencil XML...to HTM VSTX to MHT VSTX to MHTML How to convert VSTX to VSX Select...