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covert svg to icns (with imagemagick)
#!/bin/bash
echo "*** SVG 2 ICNS ***"
if [ $# -ne 1 ]; then
echo "Usage: svg2icns filename.svg"
exit 100
fi
filename="$1"
name=${filename%.*}
ext=${filename##*.}
echo "processing: $name"
dest="$name".iconset
mkdir "$dest"
convert -background none -resize '!16x16' "$1" "$dest/icon_16x16.png"
convert -background none -resize '!32x32' "$1" "$dest/icon_16x16@2x.png"
cp "$dest/icon_16x16@2x.png" "$dest/icon_32x32.png"
convert -background none -resize '!64x64' "$1" "$dest/icon_32x32@2x.png"
convert -background none -resize '!128x128' "$1" "$dest/icon_128x128.png"
convert -background none -resize '!256x256' "$1" "$dest/icon_128x128@2x.png"
cp "$dest/icon_128x128@2x.png" "$dest/icon_256x256.png"
convert -background none -resize '!512x512' "$1" "$dest/icon_256x256@2x.png"
cp "$dest/icon_256x256@2x.png" "$dest/icon_512x512.png"
convert -background none -resize '!1024x1024' "$1" "$dest/icon_512x512@2x.png"
iconutil -c icns "$dest"
rm -R "$dest"
@magnusviri
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magnusviri commented Feb 1, 2021

I expanded on your script here: https://github.com/magnusviri/svg2icns

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