> Not to be confused with mod_pagespeed, which is an Apache module PageSpeed Service proxies your site, but aside from that the optimizations it makes are very

> Not to be confused with mod_pagespeed, which is an Apache module PageSpeed Service proxies your site, but aside from that the optimizations it makes are very similar to mod_pagespeed (and ngx_pagespeed). Which makes sense: they're closely related Google projects. (I work on all three, but mostly ngx_pagespeed these days.)