Answer by Kannan for Is it possible to display the path with an Apache index listing with a custom header?

Since you are using a custom header, adding a small piece of JavaScript to the header file should help.

For example, below JS code in the custom header will modify the h1 tag (custom defined) to show the current URL.

<h1 id="path"></h1><script>document.getElementById("path").innerHTML = "Index of " + window.location.href;</script>