title: Can you combine multiple images into a single one using JavaScript?
body: <p>I am wondering if there is a way to combine multiple images into a single image using only JavaScript.  Is this something that Canvas will be able to do.  The effect can be done with positing, but can you combine them into a single image for download?</p>
  
  <p><strong>Update Oct 1, 2008:</strong></p>
  
  <p>Thanks for the advice, I was helping someone work on a js/css only site, with jQuery and they were looking to have some MacOS dock-like image effects with multiple images that overlay each other.  The solution we came up with was just absolute positioning, and using the effect on a parent <code>&lt;div&gt;</code> relatively positioned. It would have been much easier to combine the images and create the effect on that single image.</p>
  
  <p>It then got me thinking about online image editors like <a href="http://www.picnik.com/" rel="noreferrer">Picnik</a> and wondering if there could be a browser based image editor with photoshop capabilities written only in javascript.  I guess that is not a possibility, maybe in the future?</p>