Wikipedia:Administrators or Wikipedia:Interface administratorsEdit
An interface administrator is a different right from being a regular administrator. Before 27 August 2018, administrators could edit JS and CSS pages. Now, the interface administrator permission is needed to edit those pages. Requests should be made at Wikipedia:Requests for permissions#Requests for interface administrator. The user right will be given by a bureaucrat. This user right should not be held for longer than necessary, and bureaucrats should always add an expiry date to the rights even for themselves.
There are 0 interface administrators on the Simple English Wikipedia.
Wikipedia:User access levelsEdit
Interface administrator rights are granted to users who need to change JS, CSS, and JSON pages on the wiki. This is a different right from being a regular administrator. Before this right was created, administrators could change these pages; now only interface administrators can change these pages for security reasons.