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.... MergeOnline ( new List < FileInfo > { file1 , file2..."OutputFolder/merged.pptx" , new List < FileInfo > { file1 , file2...