GroupDocs.Viewer for .NET allows you to render documents in various formats as HTML, PDF, JPEG, and PNG files. You do not need to use third-party software to view files within your .NET application....such as DOCX, PDF, XLSX, PPTX, CAD drawings, email messages, archives...render DOCX, PDF, XLSX, PPTX, CAD, email, and other files as HTML...