Hello, I have some experience in configuring the web server (apache or similar) to compress the JS and CSS so your page load will be very faster, about 10x smaller sizes, even for html files. Is that your need?
We have experience too in make the website get a better note in Google Page Insights.
This bid does not include rewrite JS and CSS files, but may include compression and minification of those files.
Waiting for your contact! Thanks in advance!