bin/optimize-image

#!/bin/bash
#
# Convert JPEG/PNG images to WebP format.
# > Note: Requires `webp`.
#
# - Optimize a specific image:
#
# `optimize-image {{file.jpg}}`
#
# ---
# Author: Nick Plekhanov, https://nikkhan.com/
# License: MIT
# https://github.com/nicksp/dotfiles

set -euo pipefail

RED="$(tput setaf 1)"
UNDERLINE="$(tput sgr 0 1)"
RESET="$(tput sgr0)"

error() {
  echo -e "$UNDERLINE$RED$1$RESET\n"
}

# Check if arguments are provided
if [ "$#" -eq 0 ] || [ "$1" = "-h" ]; then
  echo "Usage: $(basename $0) <input_file>"
  echo
  echo "Convert all given images to webp using cwebp."
  echo "The output will be stored in the same directory of input file(s)."
  echo
  echo "Run \"help $(basename $0)\" for more information on a command."
  exit 1
fi

if ! command -v cwebp &> /dev/null; then
  error "Webp is not installed: brew install webp"
  exit 1
fi

for file in "$@"; do
  filename=${file%\.*}
  cwebp -q 75 -quiet $file -o $(basename ${filename}).webp
done