Resize and optimize images upon upload with ckfinder

I am using ck finder and ck editor for my site. I find this package really useful and it ticks all boxes except one. It would be great if images could be resized, convert or optimize automatically on upload. Any ideas of how I can accomplish that? Anyone who has already done it?. I found the solution with unisharp and it would be great if ckfinder also has the same solution