
I find the compression wizard in PSP works better than photoshop. Try changing the colour depth as well...that might help.
( ,
Fri 26 Oct 2012, 20:46,
archived)

and with png make sure you remove the alpha channel (unless you need it) and make sure it's indexed to the number of colours you want, or it'll look big and you'll join the ranks of people declaring that pngs are huge. (hint: they're not, unless you leave them with 16m colours and an alpha channel, in which case yes, yes they are.)
if you've got shading of colours and soft boundaries like in a photo, use jpg.
( ,
Fri 26 Oct 2012, 21:00,
archived)
if you've got shading of colours and soft boundaries like in a photo, use jpg.