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....getPages () -> add ( $pdf_page ); # save the newly generated PDF file...file $new_document -> save ( $dataDir . "output.pdf" ); print "Process...