pdftojpg: Convert pdf files to images in jpg format

Not sure if you've encountered this problem: unable to view a pdf file after it was sent to Gmail, or unable to convert a pdf file into a text document. Indeed, for pdf files made from electronically scanned books, we can only convert them into image formats. PDFTOJPG is a software that can convert pdf files into jpg images, without the need for support from Adobe Reader or any third-party plugin libraries.