MarkItDown
Microsoft's open-source tool that converts almost anything — PDF, Office docs, images (OCR), HTML, audio, archives and web pages — into clean Markdown for LLMs.
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GPT-4oWhat is MarkItDown?
MarkItDown is a lightweight Microsoft open-source library/CLI that transforms a very wide range of files into uniform Markdown so they can be fed to language models: Word, PowerPoint, Excel, PDF, HTML, CSV/JSON/XML, images (with OCR/descriptions), audio (with transcription), EPUB, ZIP archives and more, plus web-page URLs. It optionally embeds metadata and image descriptions, is pip-installable and scriptable in Python, and has become a common first stage in RAG and document-AI pipelines where messy source formats must become clean text.
Pros
- One tool replaces many format-specific converters.
- Output is ideal for RAG and LLM ingestion.
- Simple CLI plus Python API.
- Backed by Microsoft, MIT licensed.
- Handles obscure Office and archive types.
Cons
- Complex layout/table fidelity is not perfect.
- OCR/audio need extra dependencies or model keys.
- It converts documents; it is not itself a crawler.
- Very large files may need pre-splitting.
Compare with Alternatives
| Feature | MarkItDown | Crawl4AI | MediaCrawler | Crawlee |
|---|---|---|---|---|
| Rating | 0.0 | 0.0 | 4.4 | 0.0 |
| Pricing | Free | Free | Free | Free |
| Starting From | — | — | Free | — |
| API | — | — | — | — |
| Free Tier | — | — | — | — |
| Mobile App | — | — | — | — |
Who is it for
Document AI / RAG
Normalize mixed files to Markdown before embedding.
Knowledge bases
Bulk-convert Office and PDF archives to text.
LLM preprocessing
Turn messy uploads into model-ready context.
Data migration
Convert legacy documents to portable Markdown.
Personal productivity
Quickly turn slides/PDF into editable text.