title: Would an empty src attribute cause a request on any browser?
body: <p>I wonder if it's safe to have an html image tag like this </p>
  
  <pre><code>&lt;img src width="30" height="20"/&gt;
  </code></pre>
  
  <p>ASP.NET Image control render like this when ImageUrl is not set. I fill src attribute later on client side</p>
  
  <p>I want to be sure that this is not causing any request to server on any browser. I imagine this is the case but wanted to double check</p>