title: JS Upload image from Canvas without "toDataURL" method
body: <p>I'm trying to upload image from canvas to the server. The common solution is to get data from canvas using <code>toDataURL</code> method but unfortunately some images leads Chrome to crush. I was trying to use <code>image/png</code> and <code>image/jpeg</code> mime types, I was also trying to reduce quality for <code>image/jpeg</code> up to 0.4 but Chrome (vesrion 45.0.2454.85 m) was crushing anyway. Is there any way to extract image from cavnas without this method, like retrieving Blob object or something like this?</p>