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#!/usr/bin/env bash
# Optimize a folder of images for the web:
#
# ./optimize-images.sh post/my-post
#
# For every .jpg/.jpeg/.png in the folder:
# - converts it to .webp (scaled to fit inside 1200x800, quality 80)
# - deletes the original (recoverable via git history)
# .gif and existing .webp files are left untouched.
set -euo pipefail
if [ $# -ne 1 ]; then
echo "usage: $0 <image-folder> e.g. $0 post/my-post" >&2
exit 1
fi
dir="${1%/}"
[ -d "$dir" ] || { echo "error: not a directory: $dir" >&2; exit 1; }
shopt -s nullglob nocaseglob
for file in "$dir"/*.jpg "$dir"/*.jpeg "$dir"/*.png; do
magick "$file" -resize '1200x800>' -quality 80 "${file%.*}.webp"
rm "$file"
echo "$file -> ${file%.*}.webp"
done
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