GroupDocs.Viewer for Python via .NET renders 170+ file formats — DOCX, PDF, XLSX, PPTX, CAD, email, Archives, images — to HTML, PDF, PNG, or JPG with embedded or external resources, watermarks, page selection, and AI-pipeline friendly output....email messages, compressed archives, eBooks, and raster images...convert user uploads to PDF for archival or to per-page PNG for thumbnail...