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RAG Pipeline Explorer

Step through the six phases of RAG — from document loading to generation. Tune variables like chunk size, top-k retrieval, and temperature to observe the trade-offs on latency, cost, and hallucination risk.

Step 1 of 6: Document Loading17%
Phase 1 of 6
loading

Document Loading

Bring your data in

The first step is ingesting documents from various sources — PDFs, web pages, databases, APIs, or local files. Each document becomes a structured object with content and metadata (source, page number, date). The quality of your RAG pipeline starts here: garbage in, garbage out.

Key Architecture Concepts
  • Document loaders handle format-specific parsing
  • Metadata is preserved for source attribution
  • Supports batch loading from directories
  • Common formats: PDF, HTML, Markdown, CSV, JSON
Common Engineering Pitfalls
  • !Losing document structure (headers, tables) during parsing
  • !Not preserving metadata — you need it for citations
  • !Loading stale data without a refresh strategy
Python Implementation Example
pythonLive Tuned Parameters Active
from langchain_community.document_loaders import PyPDFLoader

loader = PyPDFLoader("report.pdf")
documents = loader.load()

# Each document has .page_content and .metadata
print(documents[0].metadata)
# {'source': 'report.pdf', 'page': 0}
Phase 1 of 6
Phase 1/6
Document Loading
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