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

  • Weekly update for Jan 10, 2020—front-end file uploads in LoginRegisterPro with InputfieldFrontendFile module: More
    10 January 2020
  • If you haven't seen it yet, be sure to check out this great infographic by @teppokoivula in ProcessWire Weekly #294— How ProcessWire professionals work—the results of our recent weekly polls summarised: weekly.pw/issue/294/#how…
    3 January 2020
  • Today we have a new master version released, 3.0.148! There are 25 new versions worth of upgrades, fixes and optimizations in this new master version, relative to the previous. In this post we take a closer look at what’s new, how to upgrade, & more— More
    3 January 2020

Latest news

  • ProcessWire Weekly #297
    In the 297th issue of ProcessWire Weekly we're going to check out the latest core updates (ProcessWire 3.0.149) and introduce a new third party module called StaticWire. Read on!
    Weekly.pw / 18 January 2020
  • ProcessWire 3.0.148 new master
    Today we have a new master version released, version 3.0.148! The last master version was 3.0.123, so there are 25 new versions worth of upgrades, fixes and optimizations in this new master version, relative to the previous. In this post we’ll take a closer look at what’s new, how to upgrade, and more.
    Blog / 3 January 2020
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“ProcessWire is like a breath of fresh air. So powerful yet simple to build with and customise, and web editors love it too.” —Margaret Chatwin, Web developer