PdfRipImage is a utility to extract images from PDF documents convert them to a format of your choice.
It is available in graphical and command line versions and runs on Linux and
other UNIX-like platforms
(including Microsoft Windows running Cygwin).
It uses programs from
Xpdf and netpbm to do the hard work, so these programs must be installed on
PdfRipImage is entirely free and Open Source. It is distributed under the terms of the GNU General Public License Version 2.