(source: https://jsfiddle.net/Sq7hg/2021/)

fiddle.css

#mydiv {
    background-color: lightblue;
    width: 200px;
    height: 200px
}

fiddle.html

<div id="mydiv">
    <img src="/img/logo-white.png" />
        <p>text hhhh!</p>
</div>
<br><br>

<h2 id="link"></h2>

fiddle.js

html2canvas([document.getElementById('mydiv')], {
    onrendered: function(canvas) {
       document.body.appendChild(canvas);
       var data = canvas.toDataURL('image/png');
       // AJAX call to send `data` to a PHP file that creates an image from the dataURI string and saves it to a directory on the server
       document.getElementById('link').innerHTML=data;
    }
});