Nice idea, and a clean and simple implementation. Could it be enhanced (made more pretty?) by using a nice monospaced font (e.g. <a href="https://www.google.com/fonts/specimen/Droid+Sans+Mono" rel="nofollow">https://www.google.com/fonts/specimen/Droid+Sans+Mono</a>) and giving the option of aligning query string parameters vertically by equals sign?