Just a heads up.. ngx_pagespeed is a work in progress. As in, the skeleton is there and there is a filter or two running as a proof of concept, but there is still a lot of work to be done. Contributions would be most welcome.. :)
Apart from the whole "making it work part". Is there something in particular that is difficult ?
If someone has good understanding of nginx internals, then any input, guidance, etc, would be awesome, as it would short circuit a lot of that extra work. We have a design doc in progress, I'll work on making it public and will share it in the project readme. In the meantime, if you have any suggestions, open an issue on the repo and let us know!
We have a good understanding of the nginx internals - the Tengine web server maintained by us is an example (http://tengine.taobao.org/ http://github.com/taobao/tengine) We also want to ask how to contribute and look forward to your design doc :)