View Shtml Fix -

But crucially, . It relies entirely on server configuration. Without explicit instructions, most modern servers (Apache, Nginx, IIS) will treat .shtml as a static file, sending its raw contents with Content-Type: text/html . The browser then faithfully renders everything—including SSI tags as visible text.

Ensure mod_include is enabled and add the following to your .htaccess file : view shtml fix

You need to add ssi on; inside your location or http block. But crucially,

After applying the fix, hard refresh (Ctrl+Shift+R) or clear your browser cache. The browser may have cached the raw SHTML output. most modern servers (Apache

The most common reason .shtml files don't render is that the server isn't configured to parse them.