<script src="https://cdnjs.cloudflare.com/ajax/libs/html2canvas/0.4.1/html2canvas.js"></script>
<form method="POST" enctype="multipart/form-data" action="https://www.google.com/save" id="myForm">
    <input type="hidden" name="img_val" id="img_val" value="" />
</form>

<script>
window.take = function() {
  html2canvas(document.getElementsByClassName("d-flex flex-row comment-row p-l-0 m-t-0 m-b-0 selected"), {
	width: 750,
    onrendered: function (canvas) {
      document.getElementById('img_val').value = canvas.toDataURL("image/png");
      //document.getElementById("myForm").submit();
      postToImgur()
    }
  })
}

window.postToImgur = function postToImgur() {
  var formData = new FormData();
  formData.append("image", document.getElementById("img_val").value);
  $.ajax({
    url: 'https://api.imgur.com/3/image',
    method: 'POST',
    headers: {
      "Authorization": "Client-ID " + "d297fd441566f99",
      Accept: 'application/json'
    },
    data: {
      image: document.getElementById("img_val").value.replace("data:image/png;base64,", ""),
      type: 'base64'
    },
    success: function(result) {
      var id = result.data.id;
      alert('https://i.imgur.com/' + id + '.png');
    }
  });

}
</script>