So I did the same test - Quality of 0 in PS got me down only to 59,475 Bytes. http://public.adifferentengine.com/files/lossy.ps.jpg http://public.adifferentengi

So I did the same test - Quality of 0 in PS got me down only to 59,475 Bytes. http://public.adifferentengine.com/files/lossy.ps.jpg http://public.adifferentengine.com/files/lossy.ps.jpg Convert with image magick got me only down to 72,634 bytes http://public.adifferentengine.com/files/lossy.magick.jpg http://public.adifferentengine.com/files/lossy.magick.jpg So yeah the encoder does matter and Photoshop's is that much better than GIMPs.