IE throws Security Error when calling toDataUrl on canvas

Question

first of all, I know that accessing toDataURL method of canvas when its source image is from another origin is a security issue.

but in my case, I am u

Answer 1

There exists a library that abstracts the svg --> canvas --> png and adds a method to the SVG element so that in any browser you can just call mySvg.toDataUrl() with a callback and the option "canvg":

https://github.com/sampumon/SVG.toDataURL

This implementation takes into account security exceptions so you can get past the permissions error you are encountering.

<script type="text/javascript" src="http://canvg.github.io/canvg/rgbcolor.js"></script> 
<script type="text/javascript" src="http://canvg.github.io/canvg/StackBlur.js"></script>
<script type="text/javascript" src="http://canvg.github.io/canvg/canvg.js"></script> 
<script>
<script type="text/javascript" src="http://rawgit.com/sampumon/SVG.toDataURL/master/svg_todataurl.js"></script>

mySVGelement.toDataURL("image/png", {
  renderer: "canvg"
  callback: function(data) {
      image.src = data;
  }
});
</script>

Compatibility:

Browser     E x p o r t i n g  f o r m a t
            SVG+XML  PNG/canvg  PNG/native
IE           9+       9+         -
Chrome       +        +          33+ ²
Safari       +        +          -
Firefox      +        +          11+ ¹
Opera        +        +          -

Answer 2

In my case, I changed the graphic elements that make up the image from svg to png. When using svg, I am seeing a security error in IE 11 (and 10), not Chrome, when I use toDataURL. Building the graphic using png elements, it's fine.

There is a 2nd problem with svgs not resizing properly in IE 11, so that's another strike against using svgs with IE.