qpdf: qpdf: QPDF is a program that does structural, content-preserving qpdf: transformations on PDF files. It could have been called something qpdf: like pdf-to-pdf. It also provides many useful capabilities to qpdf: developers of PDF-producing software or for people who just want to qpdf: look at the innards of a PDF file to learn more about how they work. qpdf: qpdf: Homepage: http://qpdf.sourceforge.net/ qpdf: qpdf: