RAG From First Principles: How a PDF Becomes a Searchable Answer

Great breakdown. PDF RAG is easy to demo, but hard to make trustworthy.

Chunking, metadata, citations, access control, and index hygiene matter a lot once the PDFs are internal or customer-facing.

At LangProtect, we look at this as both a retrieval problem and a data-security problem: what gets indexed, what gets retrieved, and what sensitive context reaches the user.

very informative! thank you for sharing your knowledge.