PYMUPDF4LLM-C PUB_DATE: 2026.01.06

STRUCTURED PDF EXTRACTOR FOR RAG CLAIMS ~300 PAGES/S ON CPU

A new C-based PDF extractor with Python bindings outputs structured JSON (geometry, typography, headings) and claims ~300 pages/second on CPU—about 30x faster t...

Structured PDF extractor for RAG claims ~300 pages/s on CPU

A new C-based PDF extractor with Python bindings outputs structured JSON (geometry, typography, headings) and claims ~300 pages/second on CPU—about 30x faster than pymupdf4llm. It targets high-volume RAG pipelines with layout-aware chunking; no OCR or image extraction yet, and external benchmarks are not provided.

[ WHY_IT_MATTERS ]
01.

Faster, CPU-only parsing can remove ingestion bottlenecks in large RAG/document pipelines.

02.

Structured layout metadata enables smarter chunking and potentially higher retrieval quality than plain text splits.

[ WHAT_TO_TEST ]
  • terminal

    Benchmark end-to-end indexing latency and retrieval accuracy vs existing parsers (pymupdf4llm/docling) on your corpora.

  • terminal

    Test scanned/image-heavy PDFs and define OCR fallback routing, plus thresholds for switching parsers.

[ BROWNFIELD_PERSPECTIVE ]

Legacy codebase integration strategies...

  • 01.

    Map its JSON schema to your current chunker and filters; validate header/footer removal and bbox-based boundaries.

  • 02.

    Introduce parser selection logic and keep your existing OCR-capable tool as a fallback for edge cases.

[ GREENFIELD_PERSPECTIVE ]

Fresh architecture paradigms...

  • 01.

    Design layout-aware chunking around geometry/typography fields with clear retrieval quality metrics and A/B gates.

  • 02.

    Scale with CPU worker pools, containerize the parser, and persist raw JSON to allow re-chunking without re-parsing.

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