A caching module enabled by default which minifies some static files. This may mean your CSS or Javascript doesn't update immediately, as it is minified.
Our servers use mod_pagespeed
by default.
This is an open source module which compresses pages & website assets automatically.
This will speed up your site dramatically so we recommend you leave it on.
If you wish to turn it off (for example, if you are developing your website and require a CSS or Javascript update) please use the following code within your .htaccess
file (in the root directory of your website):
<IfModule pagespeed_module>
ModPagespeed off
</IfModule>