npm install save-svg-as-png

To save a PNG, include the script saveSvgAsPng.js in your page, then call the saveSvgAsPng function with an SVG node and a filename:

saveSvgAsPng(document.getElementById("diagram"), "diagram.png");

The filename is the preferred filename when saving the image to the file system. The browser may change the name of the file if there is already a file by that name in the target directory.

If you want to scale the image up or down, you can pass a scale factor in an options object:

saveSvgAsPng(document.getElementById("diagram"), "diagram.png", {scale: 0.5});

If you just want a dataURI for an SVG, you can call svgAsDataUri with an SVG node, options, and a callback:

svgAsDataUri(document.getElementById("diagram"), {}, function(uri) {
  ...
});

Compatible with browserify.

saveSvgAsPng relies on the canvas element's toDataURL, which throws a SecurityError in IE.