Foto S Joico How Can I Change The File Size Of A Jpeg Foto Without Changing The Actual Size Of That Photo Using IPhoto?

How can I change the file size of a jpeg foto without changing the actual size of that photo using iPhoto? - foto s joico

For example: Your photo is 3.6 MB, but I need is 156 KB big, I can not cut a piece of the picture because you have to do the same thing with iPhoto.