GroupDocs.Annotation for Python via .NET adds annotations, markup, and review comments to documents and images through a single, format-independent API — text markup, shapes, watermarks, image and link stamps, text fields, threaded replies, versions, and import/export — and saves the result back to the original format....format the API supports with FileType.get_supported_file_types()...password-protected files, by passing LoadOptions . When saving, write back...