hi,
there are some general guidelines to reduce the page size are:
1)you can use min/compress version of java script file (
http://jscompress.com/[
this will help you to compress JS files]
2)remove the java script files from your master file which require for the all pages
3)if you are using sever side control and if you don't require the controls value after post back set view state property of control to false
those are few input that may help you to reduce page size