I need to optimize the loading speed of several existing websites. One of the issues that I have is the amount of requests per page. The websites have 7 or more different ty
Assuming its on apache, if not, ignore the answer :)
I have not tried this myself yet but you might want to have a look at mod_pagespeed from google.
Alot of the features you want to do by hand are already in it, take a look here as well.