Check whether a PDF contains selectable text
Open the document in a PDF reader and try selecting a word. If the text highlights, the PDF contains a text layer that this converter can extract. If the page behaves like a photograph, the file is probably a scan and ordinary text extraction will not recognize its letters; use the PDF OCR tool instead.
Text extraction is useful for copying passages into notes, searching a report, quoting your own material, or reusing text in another document. Make sure you have permission to reuse the content and verify quotations against the source.
