Edit in JSFiddle

$.ajax({
  url: '//images-focus-opensocial.googleusercontent.com/gadgets/proxy?container=focus&url=https://i.imgur.com/6pHlLrf.png',
  dataType: 'blob',
  processData: false
}).done(function(result) {
  $('#result').html('<a href="' + window.URL.createObjectURL(result) + '" target="_blank">Blob link</a>');
}).fail(function(err) {
  console.error(err);
});

<div id="result"></div>