The file extension for Web pages that contain server side includes (SSIs).
Usually seen as .shtml. A file name extension that identifies web pages containing Server-side Includes.
An HTML file utilizing server-side includes. An SHTML file can be somewhat dynamic; a typical use is the automatic inclusion of a "last modified" date.
Web pages that contain SSIs often end with an shtml extension, though this is not a requirement. The filename extension enables the Web server to differentiate those pages that need to be processed before they are sent to the browser.
Server Side Includes or SSI is an easy server-side scripting language used almost exclusively for the web. As its name implies, its primary use is including the contents of one file in another.
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