GUIDES / SOURCE DOCUMENTS

Know what to check.
Know why it matters.

Practical explanations of the gaps between a PDF that looks readable and information your ingestion pipeline can use.

Learn how to distinguish selectable text from scan-like pages, interpret image coverage, and decide whether OCR may help.

Understand how columns, tables, visuals, and non-page content can lose meaning during PDF text extraction, with practical review steps.

Check source text, tables, layout, and visual content before RAG ingestion. Separate source and extraction problems from retrieval problems.

Bring the questions to your own PDF.

Check text layers, images, layout, and non-page content. Each finding points to measured evidence.