PDF Processing

To work with PDF files:

1. Use bash to check if pdftotext is available: which pdftotext
2. If not installed, suggest: brew install poppler (macOS) or apt install poppler-utils (Linux)
3. Extract text: pdftotext input.pdf - (outputs to stdout)
4. For structured extraction: pdftotext -layout input.pdf -
5. For page-specific extraction: pdftotext -f 1 -l 5 input.pdf - (pages 1-5)

For PDF metadata: pdfinfo input.pdf For PDF to images: pdftoppm -png input.pdf output_prefix