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Marker: Smart PDF Extraction with Hybrid LLM Mode

··283 words·2 mins·

📄 Standard OCR fails with inline math, tables split across pages, and forms. Marker solves this with a hybrid approach.

The problem with traditional OCR:

  • Loses mathematical formulas and LaTeX
  • Splits tables that cross pages
  • Doesn’t understand relationships between form fields

Marker’s solution: hybrid mode

Instead of sending the entire PDF to an LLM (slow and expensive), Marker divides the work:

  1. Deep learning pipeline → handles general conversion (the heavy lifting)
  2. LLM only where it matters → steps in only for the hard parts: table merging, LaTeX formatting, and form extraction

Supports OpenAI, Gemini, Claude, Ollama, and Azure out of the box.

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💡 Explanation in a nutshell
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Marker takes the right approach: don’t use LLMs for everything (expensive), only for what deep learning can’t resolve well. The result is accurate and scalable PDF extraction, ideal for RAG pipelines that need high-quality document ingestion.

More information at the link 👇

Also published on LinkedIn.
Juan Pedro Bretti Mandarano
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Juan Pedro Bretti Mandarano