Thanks, you're completely right. Much easier to let PerlMagick do it self.
I know this is subjective, but what's the best compression to use for JPEG images, esp map images? I already reduced the amount of colours to 256. Is JPEG2000 > JPEG?
BZip, Fax, Group4, JPEG, JPEG2000, LosslessJPEG, LZW, RLE, Zip
I know for GIF only LZW can be used, correct?