Introducing the Document Parsing Protocol

The Document Parsing Protocol (DPP) is a proposed shared standard for converting pages into structured text or Markdown, addressing the subjective decisions parsers make about tables, forms, charts, diagrams, visible text, and layout. Its 0.1 working draft contains 140 rules, example pages, and expected outputs derived from ParseBench annotation practices, aiming to give benchmarks, annotators, and parser developers a common answer key. DPP prioritizes preserving source-page structure rather than inventing normalized labels, using HTML tables to retain multi-row headers and column spans, formatting and hierarchy, while allowing equivalent consistent representations such as optional table-section wrappers. It retains blank form fields and checkbox states, represents chart values in data tables with appropriate precision, captures diagram relationships through Mermaid or structured descriptions, excludes nonvisible PDF text, marks unreadable content as “[illegible],” and can include bounding boxes for verification. The protocol is available at parseprotocol.com for testing with Claude or ChatGPT, and its creators invite public feedback, issues, and pull requests to refine the draft.

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