>| I was not aware of `pdftopng', and with good reason: it doesn't exist on >| Linux: It's included in the xpdf package; e.g., % rpm -ql xpdf | grep pdftopng /usr/bin/pdftopng /usr/share/man/man1/pdftopng.1.gz Linux *is* a Unix-like system. Sources here: http://www.foolabs.com/xpdf/ Bob T.