Legacy ImageMagick Discussions Archive

Thx, worked.

Only one last thing. Some of the icons have more parts with transparency than the shadow, like this:
http://i53.tinypic.com/2qk76gx_th.png

If I convert it with
convert -colors 256 -depth 8 +dither -channel A -threshold 46%% image32.png png8:image8.png

this is the result:
http ...

Sorry I didn't recognize the different file names and thought you did kind of a double post, but it still doesn't work with those both.

How do I change the threshold manually? Theres a black border at the bottom of the image. (its the 8bit version)
http://img707.imageshack.us/img707/1791/118bit.th ...

Thank you so much! I've allready capitulated.
The png8: worked fine, the 4bit PNGs still use their transparency. I think IconWorkshop accepts only binary transparency.
Is possible to apply this to the 4 bit conversion? Or is this allready done with " -colors 16" ? In fact its not that important as ...

I use the most recent version for windows on win 7.
The commend worked for me too, Irfanview shows the transparency and bit depth correctly. So I think IconWorkshop causes the problem, but I hoped theres a special option to use during conversion.

€: I have antoher idea. Which picture format support ...

I need to reduce the color depth of some PNGs from 32bit to 8bit/256 colors and 4bit/16colors.
I've allready searched in the usage pages, but since my english skills are not the best and I use IM for the first time I only found these three usefull commands:

1. convert -colors 256 -depth 8 +dither ...