"Webcraftic Robin Image Optimizer Pro - Make your
WordPress site blazingly fast and rank higher in search
Plugin uses an intelligent optimization mode to reduce
the size of JPG and PNG images up to 80%. Reducing the
size of images is possible due to the selective
decreasing of colors and removing EXIF-data. Despite the
great economy in terms of the image size, the image
quality remains pretty much the same.
If you have many images on your website, this plugin
will help you to make the website 50% faster...!"