Server Side Includes (SSI) is a well-known server-side scripting language, which can be used to add the content of one file within another file. It is employed principally with online content and it will help make a static HTML site a lot more dynamic. If you want to have a daily quote shown on a few webpages on your website, for instance, you can create a text file and replace the quote within it every single day. All pages in which this file is included will show the updated quote, so you'll not need to modify every one of them by hand every single time. SSI may also be used to contain the output of basic functions instead of a static file - for example, the viewer's IP address, a hit counter or perhaps the current time and date. In this manner, you may make your internet site look far more professional and much more appealing to the website visitors. Web pages that implement SSI use a .shtml extension.