Notice: PyroCMS v 2.2.x is depreciated and is no long under development. This documentation is provided as-is, free of charge, for reference in existing websites.


All extra modules, plugins, widgets, and themes you add to PyroCMS go here in their respective folders. However, inside /addons/ there will be at least two folders:

  1. default (most likely)
  2. shared_addons

Since PyroCMS Pro is multi-site enabled, even single install of PyroCMS get its own slug (also used as a prefix for all your MySQL database table names). Although PyroCMS Community is not multi-site enabled, it still needs an identifier. The default identifier is default, which is why PyroCMS creates a folder named default in the addons folder.

PyroCMS Community Edition users: put your add-ons in either folder - PyroCMS will look in both.

PyroCMS Pro users: all add-ons you wish to be available to all sites go in your shared_addons folder. Add-ons that only belong to specific sites can go in their respective folder (matching the site slug) created on installation of the site.


This is where your cached assets (JS, CSS, etc) are stored so they are web accessible.


The system folder contains two main things: a copy of CodeIgniter (the PHP framework that PyroCMS runs on) and PyroCMS itself. You will most likely never have to go inside this folder, but there are two files you should know:


When PyroCMS installs, it will create this file for you with your MySQL credentials. However, if you want to change this data or add another environment, you'll need to edit this file.


The CodeIgniter application config file has a whole lot of items you'll never need to touch. In fact, PyroCMS automatically sets your base url so you may never need to look at this file and be fine!

However, if you began without mod_rewriting URLs (i.e. with index.php still in them), and you want to remove index.php from links later on, you can remove that easily by finding:

$config['index_page'] = 'index.php';

and changing it to:

$config['index_page'] = '';