Really good, but be careful

Does exactly what it says, maybe even a bit too well. Be careful with what .CSS and files you ask to be optimized because I had some frontend problems because it shrunk files that shouldn’t have been shrunk. In my case it was the theme’s icon file. It just made everything look like squares. Facebook icons, arrows, tab icons, etc. And since you can’t undo the process I had to go and find the original icons file somewhere else. Gladly I did and was able to upload it to the FTP server.