Relative URL
A relative URL is a partial URL, that is not a complete URL and is a part of an absolute url, with one or more of its parts missing. Web browsers take the missing information from the page containing the URL. For example, if the HTTP protocol is missing in the URL, the web browsers use the protocol of the current page, and if the network location is missing, the network location of the current page is used. A relative URL, most commonly used, is with partial path and a file name, but no network location or protocol is specified such as "/web/index.html".