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 week we’re proud to announce the newest ProcessWire master version 3.0.164. Relative to the previous master (3.0.148) this version adds a ton of new & useful features and fixes more than 85 issues, with more than 225 commits over 7 months— More
    7 August 2020
  • ProcessWire 3.0.163 resolves more than a dozen issue reports and adds new hooks and configurable module install options, among numerous other updates. In addition, a major update to ProCache (v4.0) has been released— More
    24 July 2020
  • Weekly update for 17 July 2020 and a look at new features coming in next week's version of ProCache— More
    17 July 2020

Latest news

  • ProcessWire Weekly #326
    In the 326th issue of ProcessWire Weekly we're going to introduce the latest ProcessWire master version, take a quick look at a brand new third party module called Textformatter Video Markup, and more. Read on!
    Weekly.pw / 8 August 2020
  • ProcessWire 3.0.164 new master version
    This week we’re proud to announce the newest ProcessWire master version 3.0.164. Relative to the previous master version (3.0.148) this version adds a ton of new and useful features and fixes more than 85 issues, with more than 225 commits over a period of 7 months.
    Blog / 7 August 2020
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“To Drupal, or to ProcessWire? The million dollar choice. We decided to make an early switch to PW. And in retrospect, ProcessWire was probably the best decision we made. Thanks are due to ProcessWire and the amazing system and set of modules that are in place.” —Unni Krishnan, Founder of PigtailPundits