2021-06-02 10:24:22 +00:00
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#!/usr/bin/env zsh
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src="$1"
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dst="$2"
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2021-06-02 22:48:41 +00:00
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sizeof() {
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stat --format="%s" "$*"
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}
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amount=0.33
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s1=$( echo "100 * $amount" | bc -l )
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s2=$( echo "100 / $amount" | bc -l )
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# convert "$src" -resize 800x800\> -scale $s1% -scale $s2% -quality 50 "$dst"
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convert "$src" -resize 800x800\> -ordered-dither o8x8,6 -colors 15 -quality 50 "$dst"
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before=$(sizeof $src)
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after=$(sizeof $dst)
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gain=$(( ( (before - after) * 100 ) / before ))
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print -- "$before => $after [$gain%])"
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