Parsing HTML Files as SHTML
To enable Server-Side Includes (SSI) processing in regular .html files, add this line to your .htaccess file:
AddHandler server-parsed .html
This tells Apache to parse SSI directives (like <!--#include virtual="/header.html" -->) inside .html files, not just .shtml files.
For modern websites, using PHP includes (<?php include 'header.php'; ?>) is a more flexible and widely supported alternative to SSI. But if you have an existing site that relies on SSI, the .htaccess directive above will enable it.
