Source. Three sample Office files were generated by a public Python script
(
python-docx /
openpyxl /
python-pptx) with original,
hand-authored content — no third-party copyright. Each
.md on the right was
produced by running
markitdown <file> -o <name>.md locally with the
official
microsoft/markitdown
CLI (MIT). No plugins enabled. No API key. No network call during conversion.