[magick-users] black and white png

[RA A. Winzer (Koenig & Dey)]

Hello Fred,

I never had a problem with converting as is. It's just the result I don't 
like. I don't have a color printer. That's why and because of the files size 
I want the pictures b/w or at least 256 colors grayscale.

I now how to do so. But I'm still wondering, why the pictures are saved by 
convert as 64bit/32bit pictures, which always means big files. If I 
"convert" the ps-file with my quite old Paint Shop Pro (from the year 2000) 
I can save it as 8bit with a much smaller size. That is what I want with 
convert.

I also tried the parameter -define png:bit-depth=8 without any changes at 
the file. I alway get the same png. Can you help me with that. I've read the 
help text about -define key: several times...

Thanks for your help so far

Alex

----- Original Message ----- 
From: "Fred Weinhaus" <fmw at alink.net>
To: <magick-users at imagemagick.org>
Sent: Thursday, June 04, 2009 6:29 PM
Subject: Re: [magick-users] black and white png


> Seems like your image is OK. I can display in Mac Preview. So my
> Ghostscript must be corrupt with respect to postscript files as it
> works fine with pdf files.
>
> Fred