WordPress media library contains all your media file like images etc which you have uploaded on your website. By default you cannot get the any media file’s direct URL without opening it. For example: Suppose you want to use a image on some other website and for that you need its URL, so what you will do is search its name on your media library, then click ‘Edit’ button then copy its URL from right metabox. But now you can make things more easy.
Media Item URL is the new WordPress plugin that displays the each media file URL as soon you hover to it in WordPress Media Library Archive (Dashboard -> Media -> Library). There are no configuration options to set, simply install and activate Media Item URL then visit your Dashboard -> Media -> Library and see how it is working.