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- #!/usr/bin/env bash
- set -eu
- if (( $# == 0 )); then
- cat <<HELP
- Usage: $(basename "$0") inputfile outputfile
- creates outputfile
- HELP
- exit 1
- fi
- haz?() {
- command -v "$1" > /dev/null 2>&1
- }
- haz? gm && convert_cmd="gm convert"
- haz? convert && convert_cmd="convert"
- infile="$1"
- outfile="$2"
- $convert_cmd "$infile" -resize "1280x" -unsharp 2x0.5+0.7+0 -quality 98 -sigmoidal-contrast 3,50% "$outfile"
- jpegtran "$outfile" | sponge "$outfile"
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