>> > Those .png icons are a serious pain to retouch--they're not even true
>> > pixel art, and
>> > I think someone downscaled most of them from larger or vector
>> originals.
>> > Which we don't have, of course. :(
>>
>> The best solution I have found (which is far from ideal of
>> course!) is to use hqx to upscale the largest image available as much as
>> possible.  This them becomes the master image, and all the other images
>> are
>> regenerated from it as needed.
>
> We've been doing something like that, using the highest quality image
> found and then downscaling as needed for the others. :) kiconedit works
> great for that.
>
> Darrell

My process was slightly different; I upscaled the image first using a
program (hqx) which attempts to get rid of the "jaggies" normally
associated with upscaling pixel art.  This provides a smoother source
image from which to downscale.

Just my $0.02. :-)

Tim