Forum:SH:Image upload form

So sometime a while back, the image/media upload form was modified so that if you're linking something, it gives a preview when you start typing, just like an any other submission form on the wiki. However, this isn't the case on the other Wikia wikis that I'm on, and I'm just wondering how this modification was accomplished because I'm sure it could be helpful elsewhere. I've certainly found it helpful myself. ProfessorTofty (talk) 18:30, July 1, 2015 (UTC)