Personally I m not a big fan of PDF. To me, it s not "open", it s big and usually you cannot edit it afterwards. More often we receive documents, like payrolls and bank notes, in those PDF files. For my administration, I recently made some effort to move from paper to computer. I want to use "open standards", like TIFF and HTML. PDF just doesn t fit. So I needed a way to convert PDF to TIFF. That s what this code does.