This was a JS - HTML that I found in the interwebs and changed it to fit my needs, when Parse was alive did work. RIP.

upload-photo-parse.js

<script type='text/javascript' src='https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js'></script>

<form id='fileupload' name='fileupload' enctype='multipart/form-data' method='post'>
  <fieldset>
    <input type='file' name='fileselect' id='fileselect'></input>
    <input id='uploadbutton' type='button' value='Upload to Parse'/></br></br>
    File URL <input type='text' id='resultURL' size='155'></input>
  </fieldset>
</form>

<script type='text/javascript'>


  $(function() {
    var file;

    // Set an event listener on the Choose File field.
    $('#fileselect').bind('change', function(e) {
      var files = e.target.files || e.dataTransfer.files;
      // Our file var now holds the selected file
      file = files[0];
    });

    // This function is called when the user clicks on Upload to Parse. It will create the REST API request to upload this image to Parse.
    $('#uploadbutton').click(function() {
      var serverUrl = 'https://api.parse.com/1/files/' + file.name;

      $.ajax({
        type: 'POST',
        beforeSend: function(request) {
          request.setRequestHeader('X-Parse-Application-Id', 'YOURAPPID');
          request.setRequestHeader('X-Parse-REST-API-Key', 'YOURAPPKEY');
          request.setRequestHeader('Content-Type', file.type);
        },
        url: serverUrl,
        data: file,
        processData: false,
        contentType: false,
        success: function(data) {
          if (window.confirm('File available at: ' + data.url)){
             window.open(data.url);
          }else{
            document.getElementById('resultURL').value = data.url;
          }   
          document.getElementById('resultURL').value = data.url;
        },
        error: function(data) {
          var obj = jQuery.parseJSON(data);
          alert(obj.error);
          window.alert('ERROR');
        }
      });
    });


  });
</script>