PDFs are often a compilation of scanned pages or still images (.png, .jpg, tiff, etc). And so even opening them with Adobe Acrobat might not allow you to copy the actual text. This is a recipe you can follow to extract the text.
How to extract text from a PDF of scanned pages
PDFs are often a compilation of scanned pages or still images (.png, .jpg, tiff, etc). And so even opening them with Adobe Acrobat might not allow you to c
