как скачивать картинку на клик для safari?

$('.coupon-download').on('click', function() {

  var el = $(this);
  var url = el.data('link_coupon');
  var link = document.createElement("a");
  link.setAttribute("href", url);
  link.setAttribute("download", "Coupon");
  link.click();

});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="col-md-4 col-sm-4 coupon-download" data-link_coupon="https://via.placeholder.com/150">
      <div class="mt-box m-b30">
        <div class="mt-media">
          <img src="https://via.placeholder.com/150" alt="">
        </div>
      </div>
    </div>