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....xmlns:x=\"urn:schemas-microsoft-com:office:excel\">" + "<o:shapelayout v:ext=\"edit\"...visit Adding Comments . Add Images in Spreadsheet in xlsx4j...