title: How to add a browser tab icon (favicon) for a website?
body: <p>I've been working on a website and I'd like to add a small icon to the browser tab.</p>
  
  <p>How can I do this in HTML and where in the code would I need to place it (e.g. header)? I have a <code>.png</code> logo file that I'd like to convert to an icon.</p>
  
  <p>Related: <a href="https://stackoverflow.com/questions/2359866/html-set-image-on-browser-tab">HTML set image on browser tab</a>.</p>