Export Highcharts to PDF (using javascript and local server - no internet connection)

Question

I am using Highcharts in my application (without any internet connection)

I have multiple charts on a html page, and I want to generate a PDF report that contains al

Answer 1

This question is a bit old but was something i was working on myself recently and had some trouble with it.

I used the jsPDF library: https://github.com/MrRio/jsPDF

Issues i ran into involved jsPDF not supporting the SVG image exported by the high chart + images being blurry and low quality.

Below is the solution I used to get two charts into one pdf document:

function createPDF() {
var doc = new jsPDF('p', 'pt', 'a4'); //Create pdf

if ($('#chart1').length > 0) {
    var chartSVG = $('#chart1').highcharts().getSVG();
    var chartImg = new Image();

    chartImg.onload = function () {

        var w = 762;
        var h = 600;

        var chartCanvas = document.createElement('canvas');
        chartCanvas.width = w * 2;
        chartCanvas.height = h * 2;
        chartCanvas.style.width = w + 'px';
        chartCanvas.style.height = h + 'px';
        var context = chartCanvas.getContext('2d');
        chartCanvas.webkitImageSmoothingEnabled = true;
        chartCanvas.mozImageSmoothingEnabled = true;
        chartCanvas.imageSmoothingEnabled = true;
        chartCanvas.imageSmoothingQuality = "high";
        context.scale(2, 2);
        chartCanvas.getContext('2d').drawImage(chartImg, 0, 0, 762, 600);

        var chartImgData = chartCanvas.toDataURL("image/png");
        doc.addImage(chartImgData, 'png', 40, 260, 250, 275);

        if ($('#chart2').length > 0) {
            var chart2SVG = $('#chart2').highcharts().getSVG(),
                chart2Img = new Image();

            chart2Img.onload = function () {

                var chart2Canvas = document.createElement('canvas');
                chart2Canvas.width = w * 2;
                chart2Canvas.height = h * 2;
                chart2Canvas.style.width = w + 'px';
                chart2Canvas.style.height = h + 'px';
                var context = chart2Canvas.getContext('2d');
                chart2Canvas.webkitImageSmoothingEnabled = true;
                chart2Canvas.mozImageSmoothingEnabled = true;
                chart2Canvas.imageSmoothingEnabled = true;
                chart2Canvas.imageSmoothingQuality = "high";
                context.scale(2, 2);
                chart2Canvas.getContext('2d').drawImage(chart2Img, 0, 0, 762, 600);

                var chart2ImgData = chart2Canvas.toDataURL("image/png");
                doc.addImage(chart2ImgData, 'PNG', 300, 260, 250, 275);

                doc.save('ChartReport.pdf');
            }

            chart2Img.src = "data:image/svg+xml;base64," + window.btoa(unescape(encodeURIComponent(chart2SVG)));
        }
    }
    chartImg.src = "data:image/svg+xml;base64," + window.btoa(unescape(encodeURIComponent(chartSVG)));
}
}

scripts to include: