ImageMagick: Convert RGBA to RGB in a sane way

When using ImageMagick to convert an RGBA picture (e.g. an OS X window with shadows) to an RGB JPEG file, you should use the following command:

$ convert input.png -flatten +matte output.jpg

If you don’t do that, you will end up with a picture like this:

The right conversion leads to this result instead:

Leave a Reply

Your email address will not be published.