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MediaWiki extensions manual
OOjs UI icon advanced-invert.svg
Release status: stable
Implementation Skin , MyWiki
Description Allows users to close the sitenotice
Author(s) Brion Vibber (Brion VIBBERtalk)
Latest version continuous updates
Compatibility policy Snapshots releases along with MediaWiki. Master is not backward compatible.
MediaWiki 1.25+
Database changes No
License GNU General Public License 2.0 or later
Example Wikimedia sites
  • $wgMajorSiteNoticeID
  • $wgDismissableSiteNoticeForAnons
Translate the DismissableSiteNotice extension if it is available at translatewiki.net

Check usage and version matrix.

Issues Open tasks · Report a bug

The DismissableSiteNotice extension allows users to close the sitenotice, using cookies.


  • Download and place the file(s) in a directory called DismissableSiteNotice in your extensions/ folder.
  • Add the following code at the bottom of your LocalSettings.php:
    wfLoadExtension( 'DismissableSiteNotice' );
  • Configure as required.
  •   Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.

To users running MediaWiki 1.25 or earlier:

The instructions above describe the new way of installing this extension using wfLoadExtension(). If you need to install this extension on these earlier versions (MediaWiki 1.25 and earlier), instead of wfLoadExtension( 'DismissableSiteNotice' );, you need to use:

require_once "$IP/extensions/DismissableSiteNotice/DismissableSiteNotice.php";


This extension provides two configuration parameters:

Integer. The value is stored inside a cookie. When a user decides to close the sitenotice, the current value of $wgMajorSiteNoticeID is saved as well and the closed notice is not shown again. $wgMajorSiteNoticeID now can be incremented when a new text is set up as sitenotice. If $wgMajorSiteNoticeID has inbetween been incremented, then the sitenotice is shown again, even if the user closed an older sitenotice before.
This allows to set whether or not it should be possible for anonymous visitors of the wiki to dismiss the sitenotice shown. Defaults to "false". Available for MW 1.25 +


When you add a new sitenotice and want everyone to see it, change the number on the created page "MediaWiki:Sitenotice id" by one (e.g. if it would be 5, you'd replace the page with the number 6 and so on).

The extension behavior is that it will remember the dismissal by the user and only reset after the number in MediaWiki:Sitenotice_id has been raised. This allows a wiki to make minor updates to a notice without causing it to show again for everybody.