SHTML is an extension of HTML that allows developers to maintain consistency across a website without the overhead of complex languages like PHP or ASP.NET. Its core function relies on —short commands formatted like HTML comments that the server recognizes and replaces with data.
http.server for basic HTML).If you don't want to install software, several websites allow you to upload and preview SHTML or HTML files instantly. HTML Online Viewer
: By offloading small dynamic tasks to the server, SHTML can sometimes improve performance compared to client-side scripts that require additional browser processing. Contemporary Use and "Free" Access