If you're opened to Open-Source solutions, I would recommend GhostScript. You can convert the PDF (with decent quality, for the most part) to individual image files of most any format you might want to work with.
The other option is to convert the PDF to HTML using pdf2htmlEX, but it will currently only compile for Linux.
I use both of the above solutions in several applications on both Linux and Windows. The advantage to the HTML way is that the text can be copied and pasted. The advantage of the GhostScript way is that the images might be more portable (smaller).
As with any open-source solution, you need to be aware of the terms of the license under which each product is released, and how that may impact your final result.