Drag and drop batch webp convert to png using dwebp on mac

dwebp.sh

#Download dwebp (WebP decoder tool) https://developers.google.com/speed/webp/download
#!/bin/bash    

if ! command -v dwebp &> /dev/null
then
    echo "dwebp could not be found"
    if ! command -v brew &> /dev/null
    then
        echo "Homebrew could not be found"
        exit
    else
        echo "Trying to install dwebp with Homebrew"
        brew install webp
    fi
fi

echo "Drag&Drop files/dirs and press enter when done."

IFS="" read -r input
eval "files=( $input )"

echo "Done"
for file in "${files[@]}"
do
  filename=$(basename -- "$file")
  extension="${filename##*.}"
  filename="${filename%.*}"
  path=$(dirname "$file")
  dwebp -o "$path/$filename.png" "$path/$filename.webp"
done