There's another png recompression utility out there:
http://advancemame.sourceforge.net/comp-download.html

  I compared it to pngcrush with four images.
  What I did was to take the image to gimp, save it to png, and then I
recompressed the gimp-generated image with pngcrush and advpng. I used
the maximum compression settings in all three programs:


  POV-Ray for Windows snapshot (full color):
  http://www.cs.tut.fi/~warp/snaps/pngcomptest/povsnap.png

    Gimp: 33335
pngcrush: 24281
  advpng: 21537


  POV-Ray for Windows snapshot (256 colors, no dithering):
  http://www.cs.tut.fi/~warp/snaps/pngcomptest/povsnap256.png

    Gimp: 16862
pngcrush: 16845
  advpng: 15371


  Chess image (full color):
  http://www.cs.tut.fi/~warp/snaps/pngcomptest/chess.png

    Gimp: 416401
pngcrush: 410235
  advpng: 416401 (no change)


  Chess image (256 colors with dithering):
  http://www.cs.tut.fi/~warp/snaps/pngcomptest/chess256.png

    Gimp: 202560
pngcrush: 198917
  advpng: 187830

-- 
#macro M(A,N,D,L)plane{-z,-9pigment{mandel L*9translate N color_map{[0rgb x]
[1rgb 9]}scale<D,D*3D>*1e3}rotate y*A*8}#end M(-3<1.206434.28623>70,7)M(
-1<.7438.1795>1,20)M(1<.77595.13699>30,20)M(3<.75923.07145>80,99)// - Warp -

Post a reply to this message