There's no magical program that can make your game have fewer files. You have to optimize it. And to make it a download, simply don't tick the checkbox that says "this file will be played in the browser".
Viewing post in Help Me, need help with submitted html5 file
NOT trying to have fewer files that's not my question. My question was trying to find a way to optimize the png files. I tried to shrink the PNG's and re-zip the files back, it did work with PNG Gauntlet, but the game won't play. Pretty obvious to manually shrink the PNG files, but I was hoping to find a better short cut