REST APIs and Free Apps for documents & images conversion on .NET device. Convert between PDF, Microsoft Word, Excel, Excel Open XML Macro-Enabled Spreadsheet, Hypertext Markup Language File, PPTX, Project, HtmL, email and images using our Free Apps....NET Convert XLSM to HTM Convert XLSM to HTM via Free App or .NET...Hypertext Markup Language File (HTM) file formats but over 153 types...