Jim Holsenback <jho### [at] hotmailcom> wrote:
> this is why I used the +FN command line switch .... so that povray could 
> produce a file that would require no post processing whatsoever.

  What would you do if the produced PNG is bigger than what the rules allow?

  It's quite taken for granted that the submitted image should be converted
to a JPEG with optimal compression settings (that is, does not show any
JPEG artifacts but is well inside the size limits).
  Depending on the contents of the image, it might not be possible at all
to create a PNG which fits the file size requirements.

-- 
plane{-x+y,-1pigment{bozo color_map{[0rgb x][1rgb x+y]}turbulence 1}}
sphere{0,2pigment{rgbt 1}interior{media{emission 1density{spherical
density_map{[0rgb 0][.5rgb<1,.5>][1rgb 1]}turbulence.9}}}scale
<1,1,3>hollow}text{ttf"timrom""Warp".1,0translate<-1,-.1,2>}//  - Warp -