C# .NET Core, Java, Python, C++, Android, PHP, Node.js APIs to create, process and convert PDF, Word, Excel, PowerPoint, email, image, ZIP, and several other formats in Windows, Linux, MacOS & Android....Calculator 1 Gradient as Slide Background Color Csharp 1 Gradient as Slide...to zip in python 1 Insert Gradient in XPS 1 insert graph in word...