You can show a different type of link icons with each link present in your WordPress blog posts, pages and other content types using the new WordPress plugin Link Icons. It displays icon on the basis of the link you give inside content you are posting. For example: a video link will show up a video icon and a text link will shows up a text icon.
All you need to do is install and activate Link Icons plugin and you are done. It automatically checks the links types and displays an icon with it. There are no further steps after activation.