image format – terminal command

setopt nullglob
mkdir -p jpg_output; for ext in png jpg jpeg heic tiff webp  gif avif; do
  for img in *."$ext"; do
    [ -f "$img" ] && magick "$img" "jpg_output/${img%.*}.png" 
  done
done

setopt nullglob
mkdir -p jpg_output; for ext in png jpg jpeg heic tiff webp  gif avif; do
  for img in *."$ext"; do
    [ -f "$img" ] && magick "$img" "jpg_output/${img%.*}.png" 
  done
done