Legacy ImageMagick Discussions Archive

Add -strip to your command line. Does that decrease the size of your PNG image? If not, post a URL to RGB.psd so we can investigate further.

Add -depth 8 to your command line.

More verbosely. Your old IM was only used 8bit quality for colors. your new version uses a higher quality of 16 bits, and the PNG output reflected that change saving at a higher quality.

You can also save using a specify style of PNG image... for example

Code: Select all

   convert .....    png24:image.png

will aso force 8bit quality

or you can force a 256 color pallet using png8: or even...

Code: Select all

   convert -type Palette  input.jpg  output.png

or a 8bit greyscale pallette using

Code: Select all

   convert -type Scale  input.jpg  output.png

See IM Examples, PNG format
http://www.cit.gu.edu.au/~anthony/graph ... rmats/#png

Legacy ImageMagick Discussions Archive

Png files larger in newer versions of ImageMagick