Google chart to png using canvg

Google chart to png.js

 <a href="#" target="_blank" class="btn btn-info print-chart" data-chart-container="my-chart" data-chart-name="my-chart-name">Save chart</a>
 
 MyApp.saveChart = function saveChart($button) {
        var printButton = $button;

        var container = printButton.data('chart-container');
        var name = printButton.data('chart-name');
        var chartContainer = $("#" + container);

        var chartArea = chartContainer.find('svg').parent();
        var svg = chartArea.html();
        var canvas = document.createElement('canvas');

        canvg(canvas, svg);
        var imageUri = canvas.toDataURL("image/png");


        printButton.attr('href', imageUri);
        printButton.attr('download', name + '.png');
    }