# Scanned PDF OCR to Markdown Convert scanned or image-heavy PDFs into Markdown with OpenDataLoader hybrid OCR, with a graceful fallback when the hybrid backend is unavailable > Canonical page: https://elysiatools.com/en/tools/scanned-pdf-ocr-to-markdown - **Category:** AI Tools - **Keywords:** pdf, ocr, markdown, scanned pdf, opendataloader ## Overview Use OpenDataLoader to turn scanned or image-heavy PDFs into Markdown. The tool prefers hybrid OCR when available, but can fall back to standard extraction so you still get a usable result and a clear metadata warning. ## Inputs - **PDF File** (file) - **Pages** (text): e.g. 1,3,5-7 - **Keep Line Breaks** (checkbox) - **Include Page Separators** (checkbox) - **Hybrid Backend URL** (text): http://127.0.0.1:5002 - **Prefer Hybrid OCR** (checkbox) ## When to use - When you need to extract text from scanned paper documents or image-only PDF files for editing or archiving. - When converting complex PDF layouts into structured Markdown for documentation or LLM training data. - When you require a flexible OCR solution that can utilize a local hybrid backend or fall back to standard extraction if the backend is unavailable. ## How it works - Upload your scanned PDF file and optionally specify the specific page range to be processed. - The tool attempts to connect to the OpenDataLoader hybrid OCR backend for advanced image-to-text conversion. - If the hybrid backend is unavailable, it automatically switches to a standard extraction method to capture available text layers. - The final output is formatted as a Markdown file, preserving line breaks and page separators based on your selected preferences. ## Use cases - Digitizing printed research papers into Markdown for personal knowledge management systems like Obsidian or Notion. - Preparing scanned legal contracts for AI-assisted analysis by converting them into machine-readable text formats. - Converting archived image-based PDF reports into structured data for documentation repositories and searchable databases. ## Frequently asked questions ### What happens if the hybrid OCR backend is offline? The tool automatically falls back to standard text extraction and includes a warning in the metadata to inform you of the fallback. ### Can I process only specific pages of a long PDF? Yes, you can define specific pages or ranges, such as '1, 3, 5-10', in the Pages input field. ### Does this tool support password-protected PDFs? No, you must provide an unencrypted PDF file for the OCR process to function correctly. ### Will the Markdown output include images from the PDF? No, the tool focuses on converting text content and layout structure into Markdown text format. ### Why should I keep line breaks in the output? Keeping line breaks helps maintain the original visual structure of the document, which is useful for technical manuals or poetry. ## Related tools - [Markdown to PDF Converter - Markdown转PDF转换器](https://elysiatools.com/en/tools/markdown-to-pdf-converter): Convert Markdown files to PDF documents with proper formatting, syntax highlighting, and styling - [PDF Header/Footer Snippets](https://elysiatools.com/en/tools/pdf-header-footer-snippets): Convert HTML to PDF with reusable logo, title, and date snippets - [PDF to Structured Markdown Converter](https://elysiatools.com/en/tools/pdf-to-structured-markdown-converter): Convert PDFs into structured Markdown using OpenDataLoader with options for HTML-rich output, images, page separators, and tagged-PDF structure - [Data URI Generator](https://elysiatools.com/en/tools/data-uri-generator): Convert files into Data URIs (Base64 or percent-encoded) for inlining images, fonts, and assets directly into HTML, CSS, or Markdown - [Encrypted PDF Converter](https://elysiatools.com/en/tools/encrypted-pdf-converter): Open password-protected PDFs with OpenDataLoader and export them as Markdown, JSON, or text once the correct password is provided - [Markdown Report Bundler](https://elysiatools.com/en/tools/markdown-report-bundler): Bundle multiple Markdown files into a single PDF report - [Markdown to PDF Theme Pack](https://elysiatools.com/en/tools/markdown-to-pdf-theme-pack): Convert Markdown to PDF with dark, light, or print-ready themes - [PDF to Markdown Converter](https://elysiatools.com/en/tools/pdf-to-markdown): Convert PDF documents to Markdown format with text extraction and formatting preservation ## Samples - [PDF Samples](https://elysiatools.com/en/samples/pdf-samples): Generated PDF samples from tools dated 2026-02-01 to 2026-02-10 - [Markdown Slide Deck Samples](https://elysiatools.com/en/samples/md-slide-deck-to-pdf): Remark/Marp style Markdown slide decks for testing PDF export layouts - [Markdown Samples](https://elysiatools.com/en/samples/markdown-samples): Markdown format examples from simple to complex document structures - [Markdown Viewer Samples](https://elysiatools.com/en/samples/markdown-viewer-samples): Sample Markdown files for README preview, documentation rendering, and rich-text markup tests ## Related content - [RAG Chunking and Retrieval Prep](https://elysiatools.com/en/hubs/rag-chunking-retrieval-prep): Clean PDFs and Word files, remove extraction noise, scan hidden prompt risks, split text, score chunk quality, and package citation-ready RAG inputs. - [PDF Extraction and Debugging Workflows](https://elysiatools.com/en/hubs/pdf-extraction-debugging-workflows): Debug hard PDF extraction cases by checking encryption, safety, page scope, reading order, OCR, tables, review marks, and structured output. - [PDF LLM and RAG Preparation](https://elysiatools.com/en/hubs/pdf-llm-rag-prep): Turn PDFs into clean, safe, citation-ready inputs for LLM summarization, embedding, search, and RAG pipelines. - [Documentation Authoring, Review, and Publishing](https://elysiatools.com/en/hubs/documentation-authoring-publishing): Extract source material from code, PDF, or HTML, then assemble, review, preview, and export a publishable documentation set.