Code: Select all
magick -size 2000x2000 gradient: gradtest.png
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The top approximately 1% of the image is a gradient from white to black, and everything below that is pure black. This image is 2000x2000, and the gradient covers about the top 20 pixels. If I make the image 100x100, only the top single row will be white, and the remainder of the image is black.