Returns `202 Accepted`. Track progress via SSE at `/api/v1/jobs/{jobId}/progress`.
```json
{
"jobId":"a1b2c3d4-e5f6-7890-abcd-ef1234567890",
"async":true
}
```
## Notes
- Accepted input format: `.pdf`.
- Works best with text-based PDFs. Scanned or image-only pages will produce empty or minimal output; use [PDF OCR](./ocr-pdf) to add a text layer first.
- Conversion is handled by LibreOffice running headless on the server.
- Complex layouts (multi-column, overlapping elements) may not convert perfectly.