[ratrocket]

Not the person you're replying to, but when they said "extraction" I believe they're talking about extracting pages from a PDF (like "splitting" the PDF apart, page-wise), not text. At least that's a thing I've used qpdf for in the past.

[BobaFloutist]

Which is also what the "extract" button does in Adobe Acrobat Pro DC for Professional Enterprise Customers or whatever they're calling it now, so it's arguably a term of art for PDFs.