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 DOTX VSTX to RTF VSTX to ODT VSTX to OTT VSTX to TXT VSTX...