title: Save as image when right clicked on canvas
body: <p>When <code>drawImage()</code> is used to draw something on to a canvas element, can the canvas be treated as an image?</p>
  
  <p>When I right click on the drawn canvas element it dosent show the "Save image as" option.</p>
  
  <p>This is the right click menu I see:</p>
  
  <p><img src="https://i.stack.imgur.com/QanVZ.png" alt="enter image description here"></p>
  
  <p>What should be done to have the "save image as" option available?</p>