C# .NET Core, Java, Python, PHP, Node.js, Python, JavaScript, C++, Android, Swift, Go, Ruby, Dart, Perl APIs to create and convert Pdf, Word, Excel, PowerPoint, email, JPG, image, ZIP, and other Formats on Windows, Linux, macOS & Android....Capture human-marked data from forms, surveys, questionnaires, multiple-choice...Optical marks JPG, TIF, TIFF, GIF, PDF...