SHTML is a file extension used for web pages that contain Server Side Includes (SSIs). These are special directives embedded in the HTML code that allow the server to dynamically include content-such as headers, footers, or other reusable elements-when the page is requested by a browser.
Using SHTML helps web developers maintain consistency across multiple pages and simplifies updates by allowing shared content to be changed in a single file. Photographers and website managers often encounter SHTML when managing portfolio sites, galleries, or blogs that rely on server-side content integration.