It is no secret that faster loading web sites lead to higher visitor engagement, retention and conversion rates. Every 100 msec of latency costs Amazon 1% drop in its sales, while 500 msec extra delay means 20% less traffic and revenue for Google. If there is a way to speed up your web server without upgrading to a more powerful server, there is no reason not to try it. This tutorial describes how to optimize Nginx web server to speed up its performance with Google’s PageSpeed module.