HTML5 Canvas quick commands to export the contents to an image (as Data URI)

canvas.script.md

export the contents of a canvas as an image

img.src = document.getElementById('canvas').toDataURL();
// src will look like data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNb...

bonus: export by specifying the quality

canvas.toDataURL('image/jpeg', 1.0); // full
canvas.toDataURL('image/jpeg', 0.5); // medium
canvas.toDataURL('image/jpeg', 0.1); // low