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....modifying, converting, and rendering Excel files (XLS, XLSX, XLSB...HTML, MHTML, Markdown, and rendering to PDF, XPS, JPEG, PNG, SVG...