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ashuklz, the samples page for pngnq shows amazing rgb->256 quantizations. However, I think its magic is about finding the right palette and it doesn't let you specify your own. If so, then it's the wrong tool for the job because its optimized palette would degrade quality because the reader cannot display it. The only tool i've found so far that does color reduction properly is pnmquant.
Anyway. It looks like you are creating an extremely powerful backend and pdfread may soon obviate rasterfarian. Before that happens, though, you need to add a few more screens to your windows gui. One screen has to let you set up how the page looks. This means rotation, splitting, etc. Optionally in addition, you should have a page that shows an in-window preview (which is important with all your options for autocropping, etc.) Another page, in the beginning, should let you collect multiple source (e.g. multiple images or chapters from a book). Also, some form of GUI batching is also needed (maybe it can go on that first page). What i did in rasterfarian was to use the filesystem to effect semaphores. Very dirty, but better than nothing. I don't know too much about the limitations of the way you do your gui, but at least some things should be implemented.
But anyway, now that we have a good backend I really hope someone who knows C# or something can step up and make an excellent front end too. It upsets me how few people know of these rasterization tools (eg on sites that talk about the reader or in reviews). That means something very big is still missing.
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