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....M_HTML ); //Instantiate a workbook and open the template XLSX...XLSX file $wb = new Workbook ( $filePath ); //Save the MHT file...