After extracting text from a PDF, inspect the beginning, middle, and end against the original pages. Check page order, multi-column reading order, tables, ligatures, footnotes, and repeated headers. Confirm that important numbers and links survived. A scanned PDF may require OCR; an empty or garbled extraction is not a successful result. Keep the source PDF available and label the output as extracted text, since layout and visual meaning may not transfer.
Akousa