Nginx PageSpeed rewrite_images and webp automatic conversion

Centmin Mod based Nginx server has Nginx PageSpeed module integrated. By default, Centmin Mod Nginx PageSpeed disables the PageSpeed rewrite_images filter to lower the incurred server resource overhead that Nginx PageSpeed has when enabled.

For the purpose of testing, I decided to re-enable the Nginx PageSpeed rewrite_images filter along with a few other image optimisation related filters including automatic conversion of images to new Google webp format if the image is deemed to benefit from the conversion.

Nginx PageSpeed will:

  • Automatically calculate if there is any benefit in terms of image file size. If there is no benefit, Nginx PageSpeed will not convert to webp format.
  • Only serve the rewritten webp format image to browsers which support webp. Non supported browsers will get the original image instead.

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Posted in Centmin Mod, Google PageSpeed Tagged with: , , , , , , , , , , , ,

GTmetrix for WordPress Plugin

Anyone who’s read my web site page loading speed optimisation article, knows I am obsessed with page load speed and web server performance in general and that GTmetrix is one of my favourite pagespeed/yslow testing tools. So when I came across GTmetrix’s Wordress plugin, it was a match made in heaven. I installed the GTmetrix for WordPress plugin on this test blog and scheduled it for weekly page speed tests and for it to alert me to when page load speed goes beyond 4 seconds from Dallas test server region.

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Posted in GTmetrix, PageSpeed, Wordpress Tagged with: , , , , ,

Nginx WordPress + WP-FFPC Plugin Setup + ngx_pagespeed

The Centmin Mod outlined WordPress fastcgi caching guide might not be everyone’s cup of tea. So I’ll out line an alternative WordPress caching method via WordPress plugin called, WP-FFPC (Fast Full Page Cache) which utilises Memcached server (via PHP memcache or PHP memcached) or via APC Cache. All three caching methods are supported and installed by default on Centmin Mod v1.2.3 based servers (when default unattended method of install is used).

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Posted in Centmin Mod, Google PageSpeed, Google SPDY, Wordpress Tagged with: , , , , , , , , , , , , ,

Centmin Mod HTTPS / SSL Google SPDY configuration

This 128MB VPS Server test blog uses https / SSL with Google SPDY. I’d like to share the base Nginx vhost template I use below (as at July 27th, 2013).

I use startssl.com SSL + Google SPDY and followed instructions from following:

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Posted in Centmin Mod, Google PageSpeed, Google SPDY Tagged with: , , , , , , , ,

Google PageSpeed Insights: Almost perfect !

Google PageSpeed Insights is a useful online tool for any webmaster interested in improving their web site’s page load speed.

What is PageSpeed Insights?
PageSpeed Insights analyzes the content of a web page, then generates suggestions to make that page faster. Reducing page load times can reduce bounce rates and increase conversion rates.

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Posted in Centmin Mod, Google PageSpeed Tagged with: , , , , , , , ,

Centmin Mod Test Blog

Welcome to Centmin Mod Test Blog. The purpose of this blog is for testing Centmin Mod menu based Nginx auto installer on a CentOS 6.4 based RamNode SSD Cached LEB VPS server (low end box) with only 128MB of memory installed.

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