# Document OCR and Structured Extraction Tools

Extract text, Markdown, JSON, tables, captions, and RAG-ready chunks from scanned PDFs and document images with OCR and structure-aware workflows.

> Canonical page: https://elysiatools.com/en/hubs/document-ocr-extraction

- **Category:** extract

- **Keywords:** document ocr, pdf text extraction, pdf to markdown, scanned pdf ocr, pdf to json, pdf table extraction, image ocr, rag document extraction

## Overview

This hub focuses on turning document files into reusable data. It covers image OCR, scanned-PDF recovery, plain-text and Markdown extraction, structure-aware JSON browsing, table export, caption indexing, page-range extraction, and chunk packaging for downstream search or LLM pipelines.

## Tools

- AI Image to Markdown: Extract text from images and convert to markdown format using AI vision models
- Receipt & Invoice OCR Recognition: Extract key information from receipt/invoice images and convert to custom JSON format using AI vision models
- AI ID Card OCR Recognition: Extract key information from ID card images and convert to JSON format using AI vision models for free
- PDF OCR Text Layer: Add searchable/copyable OCR text layer to scanned PDF using Tesseract
- 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
- PDF Text Extractor: Extract text content from PDF documents with support for page selection, formatting options, and multi-language processing
- PDF to Markdown Converter: Convert PDF documents to Markdown format with text extraction and formatting preservation
- PDF to Clean Text for LLM: Extract clean text from PDFs with OpenDataLoader for summarization, translation, embedding, and other LLM workflows
- PDF to JSON Structure Explorer: Extract structured OpenDataLoader JSON from a PDF and browse headings, paragraphs, tables, lists, pages, and bounding boxes in an explorer view
- PDF Table Extractor to CSV/JSON: Extract tables from PDFs with OpenDataLoader and export them as structured JSON, flat CSV, or HTML tables
- PDF RAG Chunker & Citation Pack: Convert a PDF into heading-aware RAG chunks with page numbers, bounding boxes, and citation metadata
- PDF Image & Caption Extractor: Extract images from PDFs, match nearby captions, and generate an HTML index package using OpenDataLoader
- PDF Page Range Extractor: Extract only selected PDF pages with OpenDataLoader and export the subset as Markdown, JSON, or text

## Samples

- PDF Samples: Generated PDF samples from tools dated 2026-02-01 to 2026-02-10
- JPG Samples: Sample JPG images in different aspect ratios and resolutions
- PNG Samples: Sample PNG images in different aspect ratios and resolutions
- TIFF Samples: Sample TIFF images in different aspect ratios and themes with high-quality uncompressed format
- JSON Samples: JSON (JavaScript Object Notation) format examples from simple to complex structures
- Markdown Samples: Markdown format examples from simple to complex document structures

## Frequently asked questions

### What can I do in this hub?

You can OCR images and scanned PDFs, extract clean text or Markdown, inspect structured JSON output, export tables, capture captions, slice page ranges, and package documents for RAG or LLM workflows.

### Who is this hub for?

It is useful for researchers, operations teams, knowledge-base builders, AI pipeline developers, and anyone who needs to turn documents into machine-usable content.

### How should I start?

Start with the sample closest to your source document type, then choose between OCR, text cleanup, Markdown export, JSON inspection, or table extraction based on the output you need next.

## Related content

- [PDF Conversion and Document Export Tools](https://elysiatools.com/en/hubs/pdf-convert): Compare tools that convert documents, images, and structured extractions into or out of PDF in one hub for publishing, sharing, and downstream processing.
- [Text Extraction Tools](https://elysiatools.com/en/hubs/text-extract): Explore 15 tools for extracting links, emails, phone numbers, dates, emojis, HTML attributes, and other structured signals from mixed text.
- [Markdown Export, OCR, and Document Conversion Tools](https://elysiatools.com/en/hubs/markdown-convert): Compare Markdown-to-PDF, PDF-to-Markdown, OCR, slide deck export, and structured Markdown conversion tools in one hub for documentation publishing workflows.
- [JSON Interchange and Format Translation Tools](https://elysiatools.com/en/hubs/json-convert): Compare JSON conversion tools for CSV, YAML, TOML, GraphQL, XML, Markdown, Excel, BSON, EDN, and related structured formats in one hub.