2022-02-10 14:59:41 +00:00
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#!/bin/sh -e
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2021-12-16 22:04:50 +00:00
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# Lossy image compression using ImageMagick
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2022-02-10 14:59:41 +00:00
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# Eliminates artifacts and metadata
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2021-04-21 17:49:30 +00:00
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while true
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2021-12-16 22:04:50 +00:00
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do case $1 in
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2022-02-10 14:59:41 +00:00
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(-h|--help|"") echo "Usage: $0 [-q quality (default 85)] [-o outfile] [xRES] <images...>" && exit 2;;
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(-o) out="$2"; shift 2;;
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(-q) quality="$2"; shift 2;;
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2022-02-10 14:59:41 +00:00
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(x*) resolution="$1"; resize="-resize $resolution"; shift;;
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2021-12-16 22:04:50 +00:00
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(*) break;;
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esac
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2021-04-21 17:49:30 +00:00
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done
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2022-02-10 14:59:41 +00:00
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out="${out:-$1${resolution:--shrinked}.jpg}"
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magick "$@" -auto-orient -strip \
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-interlace Plane -define jpeg:dct-method=float -sampling-factor 4:2:0 -gaussian-blur 0.05 \
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-quality "${quality:-85}" $resize "$out"
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2021-12-16 22:04:50 +00:00
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printf "Shrinked $1(%s) to $out(%s) - reduced to %s%%\n" \
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2021-12-20 17:34:03 +00:00
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$(stat --format %s "$1" "$out" | numfmt --to=iec-i --suffix=B) \
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2021-12-16 22:04:50 +00:00
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$(stat --format %s "$out" "$1" | sed 'N;s|\n|*100/|' | bc)
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