To the untrained eye, an .shtml link looks like a typo. In an era dominated by clean .com URLs or the ubiquitous .html , the extra "s" feels like a stutter—a remnant of the early internet’s clunky adolescence. Yet, when you view an SHTML link, you are looking at the first step away from static brochure-ware and toward the dynamic, living web we inhabit today.
If you open an .shtml file directly from your computer (via file:// ), you won’t see the SSI effects – only the raw source code or partial content. You must view it through a web server that processes SSI. view shtml link
When a user requests an .shtml file, the web server reads the file sending it to the browser. It scans for these special SSI directives, executes them (pulling in the header), and then sends the fully assembled HTML to the user. Short piece: "View