@derangedhermit: I've downloaded CQ, and will be trying it out this weekend. I have to check on those resizing algorithms, I don't know what most of them do!
@SBT: How many second chances to chase the future do any of us have?
. I'm going to be redoing Huckleberry Finn, Roughing It, and others changing from 600px wide to 800px wide (or maybe a bit wider, haven't quite decided). Most of the Twain books I have done are *very* image heavy, and book size will skyrocket, so I'm probably going to have to split them into two volumes to stay under MR's upload limit.
I don't know if it is the best thing to do, but I have usually set a max-width in pixels on my illustrations so they can't display more than 150% of the native size. They might be too small for hi-res displays, but at least that keeps them from upscaling so huge that they look totally ugly.
@freeshadow: I will take another look at RIOT. I tried it once a long time back, but my PSP got files sizes as good or better, so I set it aside. Maybe the newer version does better.
@Tex: I wish there was a way to keep my images at original size, but the file-size is just too intimidating for my purposes. I doubt that anyone would want to download a public domain book with 100 - 350 png illustrations weighing 1 - 5 MB each. (most are around 2500 px to 3500 px wide). Now if anyone ever invents a breed of svg that does "photo-real" stuff...