Extract text and convert PDF files to image formats.
PDF rendering library (based on the xpdf-3.0 code base)
pdftotextpdftoppmpdftohtmlpdfseparatepdfunitepdfimagespdfinfo$ pdftotext document.pdf output.txt$ pdftoppm -png document.pdf page$ pdfinfo document.pdf$ pdfimages document.pdf image$ pdfseparate document.pdf page-%d.pdf