This is the product that I have installed ion WSSDemo.com. It is developed by some old colleagues of mine and I think they are onto a winner here.

As an example, my Top 100 web sites page http://www.wssdemo.com/Pages/topwebsites.aspx contains 100 thumbnail images but RPO tiles them into a single image and the browser only has to make 1 request rather than 100. This dramatically improves the speed with which the browser can render the page.

Image tiling is only one of the optimizations performed. It also collapses and removes duplicates in CSS and Java script files.

All RPO requires is adding a few lines to the web.config and a dll in the GAC or Bin directory.