Manual:$wgThumbnailNamespaces

From Linux Web Expert

<translate> Thumbnail settings</translate>: $wgThumbnailNamespaces
Defines what namespaces thumbnails will be displayed for in Special:Search.
<translate> Introduced in version:</translate>1.40.0 (Gerrit change 828553; git #c4a36b00)
<translate> Removed in version:</translate><translate> still in use</translate>
<translate> Allowed values:</translate>(array)
<translate> Default value:</translate>[ 6 ]

Details

Defines what namespaces thumbnails will be displayed for in Special:Search. This is the list of namespaces for which thumbnails (or a placeholder in the absence of a thumbnail) will be shown.