$ 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:
2011-01-06
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:
$ 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:
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