How to install an extension in MediaWiki?

You can add your extension to your MediaWiki installation using the following steps:

1. Download and install ExtensionFunctions.php

ExtensionFunctions.php is a helper file. Some newer extensions require this file. This file allows extensions to be modularized away from the MediaWiki core code. You can download this file from, and once you download, copy the ExtensionFunctions.php file to $IP/extensions/ sub-directory of your MediaWiki installation.

2. Download your extension

A list of extensions documented on is available at Matrix and a list of extensions stored in Wikimedia are available at

3. Install your extension

You can install extensions by simply adding a line in the LocalSettings.php file in the following manner:


Note: Replace NewExtensionName.php with your new extension file name.

You may refer Readme file if it requires any special steps to take care of before the installation.

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