Legacy ImageMagick Discussions Archive

I know that, I want to change the depth 24 to 8 , reduce image size.
It's also a way to adjust the quality. I want to see if there are other ways to solve this problem.

public static boolean zoomImage(String srcImagePath, String newImagePath, Integer width, Integer height, int qual)
{
try
{
IMOperation op = new IMOperation();
op.thumbnail(width, height);
op.gravity("center");
op.background("white");
op.depth(8);//No effect!!
op.extent(width, height);
op ...