printimg — work around CUPS silently dropping progressive (interlaced) JPEGs by re-encoding to baseline before printing

printimg

#!/bin/bash
# printimg - print any image, re-encoding JPEGs to baseline to dodge CUPS issues
set -e

if [ -z "$1" ]; then
  echo "Usage: printimg <image> [lpr options...]" >&2
  exit 1
fi

input="$1"
shift

tmp=$(mktemp --suffix=.jpg)
trap 'rm -f "$tmp"' EXIT

convert "$input" -interlace none "$tmp"

lpr -o fit-to-page -o media=A4 "$@" "$tmp"