GIF 128 Dithered
GIF 128 No Dither
GIF 32 Dithered
GIF 32 No Dither
GIF 64 Dithered
GIF 64 No Dither
GIF Restrictive
JPEG High
JPEG Medium
JPEG Low
PNG 24
PNG 8 128 Dithered
GIF 128 Dithered
GIF 128 No Dither
GIF 32 Dithered
GIF 32 No Dither
GIF 64 Dithered
GIF 64 No Dither
GIF Restrictive
JPEG High
JPEG Medium
JPEG Low
PNG-8 128
PNG-64
For the Trees, I think JPEG High looks the best. For the Gradients, PNG-8 128 looks very good. JPEG low has the smallest file size. I think JPEG High has the best ratio because the file size is relatively low, yet the quality is still good.
