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....Here you can see example code. Ruby Code data_dir = File . dirname..."code39Standard.out.png" ) \ # ========== QR ========== \ # set symbology...