PageIndex
OfficialA reasoning-based RAG system that lets LLMs navigate long PDF documents using hierarchical tree structures instead of vector similarity. Works with local and online PDFs up to 1000 pages free.
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What it does
- Analyze long PDF documents beyond context limits
- Navigate documents through hierarchical tree structures
- Process both local and online PDF files
- Retrieve information using reasoning instead of vector similarity
- Chat with PDFs through MCP-compatible platforms
Best for
Researchers analyzing lengthy academic papersStudents working with large textbooks or reportsProfessionals reviewing complex documentationAnyone hitting context limits with long PDFs
1000 free pagesVectorless reasoning approachWorks with Claude and Cursor
