An absolute link includes all of the information needed for a server to find a site, including the protocol (such as HTTP), the domain name, the directory or subdirectory, and the file name and extension. For example, https://www.website.com/directory/file.php. This type of link differs from a relative link, which may only consist of the file name (ex. /file.php). Relative links only have to be unique within their own directory. On the other hand, for any specific page on the Web, there exists only one absolute link.