Ngx pagespeed Examples Directory
ngxpagespeed.com/ngx_pagespeed_example
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
ngx_pagespeed is an open-source Nginx module created by Google to help Make the Web Faster by rewriting web pages to reduce latency and bandwidth. It's a port of mod_pagespeed that's still in its early stages, and for now the documentation links below still all point to mod_pagespeed's documentation.