Server Side Includes (SSI) is a well-known server-side scripting language, that is employed to incorporate the content of one file inside another file. It's employed predominantly with online content and it can help make a static HTML site far more dynamic. If you wish to have a daily quote displayed on a variety of webpages on your website, for example, you can make a text file and switch the quote within it each day. All web pages where this file is incorporated are going to show the modified quote, so you will not need to update them by hand every time. SSI may also be used to include the output of simple functions instead of a static file - for example, the visitor's IP address, a hit counter or perhaps the current date and time. By doing this, you may make your internet site look more professional and more appealing to the website visitors. Pages that implement SSI get a .shtml extension.