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....= @"mask_off.png" ; string outputMaskOnFileName = "mask_on.png"...(); // Apply filter to layer mask smartFilter . ApplyToMask (...