2022-07-06 07:33:08 +00:00
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#!/bin/sh -ex
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# Turn white (or another color) into transparent for the given images
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2022-08-04 21:53:53 +00:00
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# TODO https://safe.duckduckgo.com/?q=imagemagick+color+to+alpha&ia=web
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# https://stackoverflow.com/questions/26408022/imagemagick-color-to-alpha-like-the-gimp/27194202#27194202
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2022-07-06 07:33:08 +00:00
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case $1 in (-*) color=${1#-};; esac
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for arg
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do extension="-transparent.${arg##*.}"
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case $extension in (*jp*g) extension=".png";; esac
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convert "$arg" -transparent ${color:-white} -fuzz 60% "$arg$extension"
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done
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