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Playground demo key · api.reefapi.com
post/file-convert/v1/doc_to_markdown4 credits

Document → clean markdown for RAG/agents. PDF uses a layout engine (headings from font sizes, real pipe-tables, reading order); docx/pptx/xlsx/html via MarkItDown. mode=fast trades structure for speed. Output delivery: each produced file ≤10MB comes inline as base64 (files[].file_b64); 10-50MB comes as a one-time download token (files[].download_path, 30min TTL); >50MB total is rejected.

Working example
Parameters
No parameters — just send.
request preview
curl -X POST https://api.reefapi.com/file-convert/v1/doc_to_markdown \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"file_b64":"PCFET0NUWVBFIGh0bWw+PGh0bWw+PGhlYWQ+PG1ldGEgY2hhcnNldD0ndXRmLTgnPjx0aXRsZT5Hb2xkZW48L3RpdGxlPjwvaGVhZD48Ym9keT48aDE+UmVlZkFQSSBnb2xkZW4gdGVzdCBwYWdlPC9oMT48cD5BIHRpbnkgZG9jdW1lbnQgZm9yIGNhbmFyeSBydW5zLjwvcD48dGFibGU+PHRyPjx0aD5lbmdpbmU8L3RoPjx0aD50aWVyPC90aD48L3RyPjx0cj48dGQ+ZmlsZS1jb252ZXJ0PC90ZD48dGQ+dXRpbGl0aWVzPC90ZD48L3RyPjx0cj48dGQ+d2ViLWV4dHJhY3Q8L3RkPjx0ZD5kYXRhPC90ZD48L3RyPjwvdGFibGU+PC9ib2R5PjwvaHRtbD4="}'

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