Installs fairly easy, although you'd need server access to require some libraries to get this thing going OR a TinyPNG account. Once downloaded, you're up and running in a matter of seconds. Click click and automate the "Job" to optimize your images once every [x] days!

Lot of my clients are still on 5.7.x though, so unfortunately only for those clients updating to 8.x or new projects.

Google will like this Add-On too.