The ultimate goal is to export the pages in a fireworks png file to individual images. So I have a couple questions:

1. Do you know of anything -- library, application -- that does this already?
2. Do you have any information on the format? They store their information in specialized chunks, I assume. I'm just hoping the format of those chunks' payload is not so difficult to figure out.

I have not dug into any fireworks files yet. I am finding no information on the format, so that is next step, but I figured someone may know a bit and save me some time :). 

What I hope (and probably isnt the case) is that each page is stored as PNG in separate IDAT chunks. Unlikely, though, due to the vector capabilities. Maybe they store svg format in the chunks?

Any help or discussion is appreciated. I plan to dig into this in the next couple days.

Ben

EDIT: Here are a couple things: the linked superuser post below indicates the files are APNG. fireworks files are not APNG. APNG contains animation chunks: acTL, fcTL, fdAT. Fireworks has, in addition to the IDAT chunks, prVW, mkBF, mkTS, mkBS, mkBT chunks but none of the APNG chunks. 

There is a pretty solid post here on fireworks PNGs: <http://newsgroup.xnview.com/viewtopic.php?f=35&t=20592#p86243>

So I suppose I need to know what these chunks do, and how to parse them.