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....openoffice excel 1 API 21 append a list of documents 1 append document...button 1 html tag 2 html tags list 1 HTML templates 1 html textarea...