Convert Office documents (PPTX, DOCX, XLSX, PDF, HTML, CSV, JSON, XML, images) to Markdown using Microsoft MarkItDown. Provides the agent with conversion strategies for academic and research workflows.
Convert Office and structured documents to Markdown for LLM consumption using Microsoft MarkItDown.
MarkItDown is a Microsoft open-source tool that converts a wide range of document formats into clean Markdown text. This is essential for academic research workflows where source materials arrive in diverse formats (PDFs from journals, PPTX from conferences, DOCX from collaborators, XLSX data tables).
| Format | Extensions | Notes |
|---|---|---|
.pdf | Text extraction; scanned PDFs require OCR | |
| Word | .docx | Paragraphs, tables, lists, headings preserved |
| PowerPoint | .pptx | Slide-by-slide with speaker notes |
| Excel |
.xlsx, .xls |
| Sheet-by-sheet, tables as Markdown tables |
| HTML | .html, .htm | Cleaned content extraction |
| CSV | .csv | Converted to Markdown table |
| JSON | .json | Pretty-printed structured output |
| XML | .xml | Structured text extraction |
| Images | .jpg, .png, .gif, .bmp, .tiff | OCR text extraction (requires optional deps) |
| Audio | .mp3, .wav | Transcription (requires optional deps) |
| ZIP | .zip | Recursively converts contained files |
When the markitdown-mcp server is configured, use the convert_to_markdown tool:
Tool: convert_to_markdown
Parameters:
uri: "file:///absolute/path/to/document.pptx"
The uri parameter accepts:
file:///path/to/file.docxhttps://example.com/paper.pdffile:// URI scheme for local files.If the MCP server is not available, use the CLI directly via shell:
# Convert a single file
markitdown document.pptx
# Save output to file
markitdown document.pptx > output.md
# Convert from URL
markitdown https://example.com/paper.pdf
Convert a PPTX to Markdown, then analyze the content:
convert_to_markdownWhen processing multiple documents:
library_add_paper| Format | Quality | Caveats |
|---|---|---|
| DOCX | Excellent | Complex layouts may lose formatting |
| PPTX | Good | Diagrams/charts become text descriptions |
| XLSX | Good | Merged cells may not render perfectly |
| Variable | Depends on PDF type (text vs scanned) | |
| HTML | Good | JavaScript-rendered content not captured |
| CSV | Excellent | Direct table conversion |
| Issue | Solution |
|---|---|
markitdown not found | Run pip install 'markitdown[all]' |
| MCP tool not available | Ensure markitdown-mcp is installed and configured in openclaw.json |
| Empty output from PDF | PDF may be scanned/image-only; needs OCR dependencies |
| Encoding errors | Ensure file is not corrupted; try re-saving from source application |
| Large file timeout | Convert via CLI instead of MCP for very large files |
pip install 'markitdown[all]' markitdown-mcp
markitdown --help
MarkItDown is pre-installed in the Research-Claw Docker image.
Edit PDFs with natural-language instructions using the nano-pdf CLI.