Unlike heavy database-driven applications, SSI is incredibly lightweight. The server quickly glues text files together and ships them out, requiring very little processing power.

In conclusion, SHTML links represent an early attempt to add dynamic content to static web pages. While they have largely been replaced by more modern web development technologies, understanding SHTML links provides valuable insights into the evolution of web development. As the web continues to evolve, it's essential to appreciate the contributions of earlier technologies, like SHTML links, to the development of modern web applications.

Are you trying to on your own website, or are you trying to open a file you downloaded?

If you have a link to an .shtml file, use the following table as a quick reference for how to open it in different environments.

SHTML links are remnants of an earlier era of the internet, but they remain highly functional, fast, and secure when configured correctly. They offer a lightweight middle ground between completely rigid static HTML files and heavy, database-driven environments like WordPress or PHP.

To help me tailor this information or troubleshoot a specific issue, tell me:

If you have downloaded an .shtml file to your computer or are developing a website locally, double-clicking the file might not display it correctly. Because your local computer lacks a web server to process the server-side includes, the template fragments (like headers or sidebars) will appear broken or entirely missing.

Many content delivery networks (CDNs) evolved from SSI. .shtml taught the web how to assemble pages from fragments.

For example, suppose you have a file called header.shtml that contains the HTML code for a website's header: