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From mediawiki.org
MediaWiki extensions manual
Release status: stable
Implementation Hook
Description Provides integration for the Acrolinx writing-assistance service
Latest version 0.2 (February 2021)
Compatibility policy Master maintains backward compatibility.
MediaWiki 1.27+
License GNU General Public License 3.0
Version history
  • $wgAcrolinxNamespaces
Quarterly downloads 5 (Ranked 133rd)
Translate the Acrolinx extension if it is available at translatewiki.net

The Acrolinx MediaWiki extension provides integration with Acrolinx, a (paid, proprietary) service that provides spell- and grammar-checking for text. This extension supplies a side window - which can be minimized - in edit pages, which in turn calls Acrolinx to check the text currently being edited.

The Acrolinx extension can be used when a page is being edited with VisualEditor - though, to have it actually make the changes that it suggests, you will need to apply a small patch to the VisualEditor code; this patch is included in the Acrolinx extension code. This extension can also be used for text and textarea inputs in forms defined by the Page Forms extension. It can also work on VisualEditor-based textareas within such forms (which additionally require the VEForAll extension).


You can download the Acrolinx code, in .zip format: https://github.com/wikimedia/mediawiki-extensions-Acrolinx/archive/0.2.zip

You can also download the code directly via Git from the MediaWiki source code repository. From a command line in the extensions directory, run the following:

git clone https://gerrit.wikimedia.org/r/mediawiki/extensions/Acrolinx

To view the code online, including version history for each file, go here: view Acrolinx code


To install the extension, place the entire 'Acrolinx' directory within your MediaWiki 'extensions' directory, then add the following line to your 'LocalSettings.php' file:

wfLoadExtension( 'Acrolinx' );

You will then need to set the values of at least two other variables in LocalSettings.php:

  • $wgAcrolinxServerAddress - the URL of the Acrolinx server being accessed.
  • $wgAcrolinxClientSignature - the client signature to use for authentication - should be a long alphanumeric string.

You can additionally set, or modify, the following variables:

  • AcrolinxNamespaces - an array that holds the namespaces whose pages, when edited, should bring up the Acrolinx interface; by default, this holds only NS_MAIN.
  • AcrolinxPageLocationID - an ID for a div within the HTML into which the Acrolinx bar should be inserted.

Version history[edit]

  • 0.1 - April 4, 2018 - Initial version
  • 0.2 - February 18, 2021 - Added support for VisualEditor/VEForall; added $wgAcrolinxNamespaces global variable; extension officially released

Authors and credits[edit]

The Acrolinx extension was created by Yaron Koren, and was improved significantly by Vedmaka.

This extension includes JavaScript code developed by both Acrolinx and Google, as well as CSS code developed by Acrolinx, all available under the Apache 2.0 license, which is compatible with the GPLv3 license under which this extension is released.