I have a Fabric.js prototype where people can load photos, text, and maps into the canvas. When they're done, I want them to be able to save the canvas as an image. I've tried using the standard:
canvasURL = canvas.toDataURL();
var image = new Image();
image.src = canvas.toDataURL("image/png");
$('#canvasContainer').replaceWith(image);
but it says that the canvas is tainted
- I think because of the images (the method above works when it's just text). The error is:
Uncaught SecurityError: Failed to execute 'toDataURL' on 'HTMLCanvasElement': Tainted canvases may not be exported.
I can use Fabric's built-in method to save as SVG:
var canvasSVG = canvas.toSVG();
$('#canvasContainer').replaceWith(canvasSVG);
But I'd rather have a PNG/JPG. Any ideas?
Here's the Fabric.js documentation on serialization of the canvas.
The following must be true:
<img>
elements must contain a crossorigin
attribute.HTMLMediaElement
s, specifically HTMLImageElement
s. This is only currently possible in Chrome, Firefox, and Opera 15+