Hello,
I am working as a software developer in the industry for more then 7 years and have worked with different technologies and databases- Flex, Flash, Actionscript, Java, Oracle, MySQL etc. During one of my projects in Java I got good hands-on experience with PDF files splitting pages from it to other PDF files and converting to images as well. I can build you a tool which runs from command line as you have specified in your requirement. The technology will be java but I am sure there will be no trouble for you to integrate as long as you would be running it from the command line.
Please let me know if there are any other terms so that we can discuss and make final agreement; Let us work together and I will make sure that you get the tool that produces your desired results! :)
Thanks & Regards.