20 open-source OCR and PDF extraction tools worth knowing in 2026
MaryamMiradi · x · 2026-11-03
Maryam Miradi maps 20 open-source OCR/PDF extraction tools for RAG and agent pipelines across five categories: native PDF parsing (PyMuPDF4LLM, pdfplumber, pypdf), OCR engines (Tesseract, PaddleOCR, Surya, EasyOCR, docTR), document parsers (Docling, MinerU, Marker, Unstructured), VLM-based parsing (olmOCR, OCRFlux, MonkeyOCR, dots.mocr, Zerox), and specialists (GROBID, Camelot, Nougat). Key point: the best OCR model isn't the best document pipeline—production agents need structure and meaning preserved for reasoning. She may benchmark the top tools next.
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