On 21 May 2010 15:48, Phillip Susi <psusi at cfl.rr.com> wrote: <snip> > Also could you explain a bit what you mean by "optimizations"? You can > of course, use a higher lossy compression on the png images, but that > lowers their quality, which I think is not a desirable tradeoff. png does not do lossy compression -- Matt Wheeler m at funkyHat.org