From: "rmagick@..." <rmagick@...>
Date: 2006-03-18T00:58:48+09:00
Subject: Re: RMagick Image Optimize

If by "optimization" you mean compression, see here:
http://www.simplesystems.org/RMagick/doc/comtasks.html#compressing

If you mean color reduction, see here:
http://www.simplesystems.org/RMagick/doc/image3.html#quantize