Thread:Merrystar/@comment-4770882-20140407074921/@comment-366087-20140407090046

If you have admin rights, then delete them just like any other page: Go to the File's page, the Dropdown next to Edit has a Delete option. You will also have to edit any pages which used to link to them to remove said links, so run a "What links here" before deleting if you are unsure.

There are tools to help list potential media: Special:FileDuplicateSearch, Special:UnusedFiles, and Special:UnusedVideo. Bear in mind that just because a file appears on these reports does not always mean they are "unused", especially if called by something other than a Content Page, such as a template or such. Of course, anything deleted can be restored, so no lasting harm.