Is it possible to load the image that we display in the canvas according to the old dimensions?

Question

JavaScript

I load an image (size 1200x1200) into a 400x400 canvas. Is it possible to download a picture from a canvas with a size of 1200-1200, otherwise it is downloaded with a size of 400x400 through canvas.toDataURL

$(document).on('click', '#download-btn', function () {
        var actualName = 'test';
        var canvas = document.getElementById('canvas-image-edit');
        download(canvas, actualName + '-edited.jpg');
    });

function download(canvas, filename) {
    var  e;
    var lnk = document.createElement('a');

    lnk.download = filename;
    lnk.href = canvas.toDataURL("image/jpeg", 0.8);

    if (document.createEvent) {
        e = document.createEvent("MouseEvents");
        e.initMouseEvent("click", true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
        lnk.dispatchEvent(e);
    }
    else if (lnk.fireEvent) {
        lnk.fireEvent("onclick");
    }
}