They finally replaced the old icon with the brand new one which is designed by Anna from icons8. Although the previous icon is lacking to be proudly displayed on your Dock, the functionally of ImageOptim can’t be disregarded.
I use ImageOptim all the time to optimize the images published on this blog. You can easily reduce the JPG up to 45% with it. ImageOptim is not just useful, but, with the brand new icon, it’s becoming more beautiful.