GroupDocs.Watermark for Python via .NET adds, searches, and removes text and image watermarks across Pdf, Word, Excel, PowerPoint, Visio, Email, and image formats — with format-specific placement, tiling, locking, and content-tree access — on-premise, with no Microsoft Office required....watermarks across PDF, Word, Excel, PowerPoint, Visio, email, and image...lock watermarks, add print-only PDF annotations, or rasterize pages...