title: how do you tell if resources are being preloaded in browser developer console
body: <p>I am using <code>&lt;link rel="preload" ...&gt;</code> technique to make the resources load faster, but I'm not seeing a measurable effect on page load times. I'm not sure if this is because the resources are not actually being preloaded, or for some other reason.</p>
  
  <p>If I'm using Firefox to debug, how do I determine in the Firefox Developer Console whether a resource was preloaded?</p>