Board Thread:Support Requests - Getting Technical/@comment-9927972-20131231154656/@comment-16101931-20140101205307

You could hide the buttons using CSS. This would prevent most users from uploading. The only way to upload would be to manually type Special:Upload into the address, which most people will not think of doing.

Add this to your wiki's Common.css: a[href*="Special:Upload" { display: none; } You can add it to Wikia.css (Special:CSS) too just to make sure that Oasis uses it.