To change this header.php to clickable custom image

You don’t change the header.php into a clikable image, that’s nonsense.

You search for “clickable header” and you will find the solution.

thanx for the hearty support.

For Default/Kubrick Theme, this works:

From: https://codex.www.ads-software.com/Designing_Headers

You can use the method offered by the Theme’s author to make the entire WordPress Default/Kubrick Theme header clickable:

* Open header.php template file.
* Change from <div id=”header”> to:

<div id=”header” onclick=”location.href=’https://siteaddress/&#8217;;” style=”cursor: pointer;”>