HTML2canvas generates Blurry images

Question

I am using jsPDF and it uses html2canvas to generate an image from some html element and insert on the .pdf file. But there is a problem on html2canvas, it generates blurry

Answer 1

you can use scale options in html2canvas.

In the latest release, v1.0.0-alpha.1, you can use the scale option to increase the resolution (scale: 2 will double the resolution from the default 96dpi).

// Create a canvas with double-resolution.
html2canvas(element, {
    scale: 2,
    onrendered: myRenderFunction
});
// Create a canvas with 144 dpi (1.5x resolution).
html2canvas(element, {
    dpi: 144,
    onrendered: myRenderFunction
});

Answer 2

Try the Canvas2Image library, it gives a better quality image at least for me div to image (fiddle).

    html2canvas($("#widget"), {
        onrendered: function(canvas) {
            theCanvas = canvas;
            Canvas2Image.saveAsPNG(canvas);  // Convert and download as image with a prmompt. 
        }
    });

Good luck!