experimental image-linear GIF 89a vs standard GIF 87a

Pet trick: linear GIF 89a vs GIF 87a
image #1 size:263 X 353 resolution: 72 X 72 colors: 12 (4 bit) file length: 8.9KB format: linear GIF89a		image #2 size:263 X 353 resolution: 72 X 72 colors: 256 ( 8 bit) file length:58.2KB format: GIF 87a
The image on the left was posterized using 6 levels of posterization and then converted to Indexed mode using 12 colors and saved as a Compuserve GIF file (GIF 87a). It was further converted into an Interlaced GIF (GIF 89a) using Thorsten Lemke's Graphic Converter, ver. 2.0.7. I saved the file on the right as a standard GIF 87a .

Pet trick: linear GIF 89a vs GIF 87a