title: Web worker and scaling images
body: <p>I need to scale images in array form in a Web Worker. If I was outside a web worker I could use a canvas and drawImage to copy certain parts of an image or scale it.</p>
  
  <p>Look like in a web worker I can't use a canvas so, what can I do? Is there any pure Javascript library that can help me?</p>
  
  <p>Thanks a lot in advance.</p>