From mediawiki.org
MediaWiki extensions manual
Release status: beta
Implementation Special page
Description Allows to compare page contents with other wikis
Latest version 0.1
MediaWiki 1.30+
PHP 5.5+
Database changes No
License GNU General Public License 2.0 or later
  • $wgCloneDiffWikis
  • clonediff
Quarterly downloads 1 (Ranked 144th)
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The CloneDiff extension lets you compare pages on the local wiki to pages in one or more "clone wikis" - wikis that have some of the same page structure, though with possibly different contents in the pages. For pages that are different (or when the page only exists in the remote wiki), the extension lets you also import the current text on the remote wiki into the local wiki.


  • Download and move the extracted CloneDiff folder to your extensions/ directory.
    Developers and code contributors should install the extension from Git instead, using:cd extensions/
    git clone https://gerrit.wikimedia.org/r/mediawiki/extensions/CloneDiff
  • Add the following code at the bottom of your LocalSettings.php file:
    wfLoadExtension( 'CloneDiff' );
  • Configure as required.
  • Yes Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.


You then need to add one or more values for $wgCloneDiffWikis in order to use the extension. Each such value has to be an array of three elements: 'name', 'API URL' and 'URL'. Here is one example:

$wgCloneDiffWikis[] = [
	'name' => 'My Example Wiki',
	'API URL' => 'https://example.org/w/api.php',
	'URL' => 'https://example.com'

The 'clonediff' permission lets you dictate who can access the page Special:CloneDiff. By default, only administrators can. To enable, for instance, all users to access that page, you could add the following to "LocalSettings.php":

$wgGroupPermissions['user']['clonediff'] = true;


If you are an administrator, you can make use of the CloneDiff functionality by simply going to the page "Special:CloneDiff" and following the instructions.


The CloneDiff extension was created by Yaron Koren for WikiWorks. Further modifications were made by Nischay Nahata for WikiWorks.

Development and Help[edit]

Please contact wikiworks.com for consulting on further developments, feature requests or bug fixes on this extension.

See Also[edit]

WikiImporter - A script that lets you update one wiki with pages from another wiki selectively.