ImageMagick convert -colors value

[Felix Miata-3]

Anyone familiar with ImageMagick? What are appropriate values for "value"? 4,
6, 8, 16, 24, 32, 64k, 256, 16M? I don't see anything in the man page to
explain it.

My screenshots from KSnapshot are too large a file size. I want to make png
files as small as possible, but nothing other than -quality 70 seems to help
materially, and that's not enough.

I was told on IRC that I should use 8-bit pngs, but I don't see anything in
the man page on how to do that. Same problem for KSnapshot. I've never found
docs to explain how it might be able to make smaller files to start with.
--
"Cast but a glance at riches, and they are gone,
for they will surely sprout wings and fly off to
the sky like an eagle."       Proverbs 23:5 NIV

 Team OS/2 ** Reg. Linux User #211409

Felix Miata  ***  http://fm.no-ip.com/

[Norman Carver]

On Monday 22 June 2009 02:20:05 pm Felix Miata wrote:
> My screenshots from KSnapshot are too large a file size. I want to make png
> files as small as possible, but nothing other than -quality 70 seems to
> help materially, and that's not enough.

Are you implying that you don't want to resize them,
just reduce their quality greatly?  I resize photos
for web and email using ImageMagick via something like:
  convert -resize 50% -quality 90 bigfile smallfile

What is the point of having crappy looking large photos?
Better to have good looking small ones, IMHO.
Norm