Server Side Includes (SSI) really is a range of directives that will permit you to contain the content of a text file inside an HTML file. In this manner, you're able to add any kind of content to few different pages on your website and change it by just updating a single text file. You're able to also incorporate the output of distinctive scripts in order that the present time and date, the IP address of the website visitor or the properties of some file appear on your website. This shall let you add in some dynamic content to static web pages, making the website more desirable to your site visitors and creating a far more professional appearance. It will likewise be easier to revise this content compared to updating each static page one at a time. If you wish to use Server Side Includes in your site, the pages that include the content of any kind of file need to be with extension .shtml.