Introduction to modules

Learn about what modules are, what different flavors of modules are available, how to install them, and where to get them.

What are modules?

At the simplest level, a module is a PHP file containing a class that adheres to ProcessWire’s Module interface. Modules enable a high level of extensibility and customization to ProcessWire. Much of ProcessWire itself is a collection of plugin modules. In fact, the ProcessWire admin application is just a group of modules.

Core modules and site modules

In ProcessWire, there are Core modules and Site modules. Core modules (stored in /wire/modules/) are modules that are included with the core, many of which come pre-installed since they provide much of the functionality in ProcessWire. On the other hand, Site modules (stored in /site/modules/) are those that you obtain separately (or create) and install yourself.

How modules are installed

Installing a Site module is as simple as uploading the module's files to the /site/modules/ModuleName/ directory on your server (where ModuleName is the name of the module) and then clicking Install in the Admin (Modules > Install). You can also install a module directly from the admin by uploading the ZIP file or providing the URL where it can be downloaded. Uninstalling a module is as simple as clicking Uninstall in the module's settings.

ProcessWire also comes with many Core modules that are not pre-installed, but are ready for 1-click installation. These can be listed and installed by navigating in the admin to Modules > Core.

Where to get modules

ProcessWire itself comes with many modules. The modules that are most likely to be used in all installations come pre-installed, while modules that are likely to be used in at least 30% of installations may not be pre-installed, but are included with the core and installable with one click (see Modules > Core). Many free third-party modules are available for from the modules directory. Several Pro modules (a type of commercial module developed by the lead developer of ProcessWire) are also available. You can also create your own modules, which is simple to do—see our section on module development.

Twitter updates

  • This post covers a few of the bigger updates in ProcessWire 3.0.154+3.0.155. This includes new live replacement of text in core and modules, a new method for creating canonical URLs, and some major upgrades to our input->urlSegment() method! More
    24 April 2020
  • A brief look at what's new in ProcessWire 3.0.154 in this forum post: More
    17 April 2020
  • This week we’ve got a few new and interesting core updates in progress, though none quite ready to release just yet. So rather than releasing version 3.0.154 today, I thought we'd instead take a brief look at what’s coming over the next few weeks… More
    3 April 2020

Latest news

  • ProcessWire Weekly #310
    The 310th issue of ProcessWire Weekly is going to be short and sweet: in this issue we'll walk you through the latest core updates, introduce a third party module called Twack, and check out a really gorgeous new site of the week. Read on!
    Weekly.pw / 18 April 2020
  • ProcessWire 3.0.154 and 3.0.155 core updates
    This post covers a few of the bigger updates in ProcessWire 3.0.154 and 3.0.155 on the dev branch. This includes a new function for live replacement of text in core and modules, a new method for creating canonical URLs, and some major upgrades to our $input->urlSegment() method that I think you’ll like!
    Blog / 24 April 2020
  • Subscribe to weekly ProcessWire news

“We were really happy to build our new portfolio website on ProcessWire! We wanted something that gave us plenty of control on the back-end, without any bloat on the front end - just a nice, easy to access API for all our content that left us free to design and build however we liked.” —Castus, web design agency in Sheffield, UK