Class Libraries & REST APIs for the developers To manipulate & process Files from Word, Excel, PowerPoint, Visio, Pdf, CAD & several other categories in Web, DeskTop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms....SpreadsheetML Portable Document Format (PDF) OpenDocument Spreadsheet (ODS)... cells . SaveFormat . PDF : ext = "pdf" ; break ; case com ....