title: ImageMagick: How to compare original PNG to lossy JPEG?
body: <p>I want to compare original PNG image to lossy JPEG image to see how much I am loosing. I found that I can use ImageMagic to compare images. I prefer using Java (im4java). I am very confused with their documentation (http://www.imagemagick.org/script/compare.php). It doesn't describe which platform it is for. How do I use these command lines and are they even available in im4java? If someone can write steps on how I use it I will appreciate it.</p>