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Posted: 2006-03-30T13:45:39-07:00
by magick
Your command produces a 27K PNG image using ImageMagick 6.2.6 and this command:
  • convert page-5.jpg -resize 170 -quality 99 -colors 256 -strip page-5.png
For ImageMagick 5.5.7 you can use +profile "*" instead of -strip.

Posted: 2006-04-01T21:33:57-07:00
by glennrp
Try -quality 90
The "0" in the ones digit means not to use PNG filtering.
PNG filtering is usually ineffective when there are few (e.g. 256) colors.