Custom canvas positioning

[slawom]

I am creating a canvas before calling html2canvas in order to achieve better quality (found this solution in one of the answers here), but the problem that I am now facing is that there is a gap at the top of my image. Seems like the scanned div is correct, but the image is shifted like its taking the header into the consideration.

` var canvas = createCanvas();

    html2canvas(elementToExport, {

        canvas: canvas,
        useCORS: true,
        allowTaint: true,
        letterRendering: true

    }).then(function(canvas) {

        // do the rest 

   }); 

`

[slawom]

This is the top of my image. The idea is to not get the black gap. When I dont use the custom canvas it works fine, but the image is low quality