Scanned PDFs need OCR before they can become Markdown
A scanned PDF usually contains page images rather than selectable text. That makes it different from a normal text-based PDF: the converter first needs OCR to detect words before the content can be shaped into Markdown.
This page is intentionally separate from the main PDF to Markdown page because the user problem is different. The important questions are OCR accuracy, scan quality, page limits, and cleanup after recognition.
Scanned PDF to MD workflow
- Upload the scanned PDF. Clear, straight, high-contrast scans give the best OCR result.
- DocToMD runs OCR directly on the scanned PDF and builds a Markdown preview from the recognized text.
- Review the Markdown preview carefully, especially numbers, tables, headers, and any text from low-quality scans.
- Copy the cleaned Markdown or download it as an .md file.
What OCR can usually recover
- OCR-readable text
- Detected headings when clear
- Paragraphs
- Lists when recognizable
- Simple table-like text
Scanned PDF OCR examples
Generated image-only PDF OCR output
A generated image-only PDF containing the printed text "OCR fixture document".
Verified fixture output | Engine: pdf2image + Tesseract OCR | Tested: 2026-08-08Preserves: Recognized printed text by pageKnown limits: OCR may misread tables, handwriting, skew, shadows, and low-resolution scans# scanned-fixture.pdf *Content extracted using OCR* ## Page 1 OCR fixture document
OCR conversion notes
- OCR accuracy depends on scan quality, language, contrast, and page rotation
- Handwriting, stamps, watermarks, and low-resolution scans may need manual correction
- Free users can convert PDFs up to 3 pages; licensed users up to 99 pages
- Password-protected PDFs must be unlocked before upload
When to use scanned PDF to Markdown
Use this page for image-based PDFs, scanned papers, receipts, printed reports, or archive documents where text selection does not work well in a PDF viewer.
Use the main PDF to Markdown converter for normal text-based PDFs where the text is already selectable.
Choose OCR only for image-based PDFs
Use this OCR workflow when text cannot be selected in the PDF viewer or when each page is effectively an image. Use the standard PDF converter when the document already contains selectable text.