function get(imgUrl) {

  return new Promise(function(resolve, reject) {
    var xhr = new XMLHttpRequest();
    xhr.responseType = 'blob';
    xhr.open('GET', imgUrl);

    xhr.onload = function() {
      if (xhr.status == 200) {
        var myBlob = this.response;
        var filename = 'file_'+ i + '.' + GetFileName(imgUrl);
        var file = new File([myBlob], filename, {type: 'image/' + GetDataType(imgUrl)});
        resolve(file);
      }
      else {
        reject(Error(xhr.statusText));
      }
    };

    xhr.onerror = function() {
      reject(Error("Network Error"));
    };

    xhr.send();
  });
}