.STML File Extension
What is an STML file?
An STML file is an HTML file that contains Server Side Includes (SSI). It references directives on the server, which dynamically generate content for a webpage. STML files are processed by the server when a user accesses the related webpage. Server Side Include webpages more commonly use the .STM extension.
Programs that open STML files
Windows
Any web browser
Run on a web server
Mac
Any web browser
Run on a web server