diff --git a/4chan_x.user.js b/4chan_x.user.js
index cd0aab8e2..1e9e6077c 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -2016,7 +2016,7 @@
         fileUrl = url.createObjectURL(file);
         img = $.el('img');
         $.on(img, 'load', function() {
-          var bb, c, data, i, l, s, ui8a, _i;
+          var c, data, i, l, s, ui8a, _i;
           s = 90 * 3;
           if (img.height < s || img.width < s) {
             _this.url = fileUrl;
@@ -2040,9 +2040,9 @@
           for (i = _i = 0; 0 <= l ? _i < l : _i > l; i = 0 <= l ? ++_i : --_i) {
             ui8a[i] = data.charCodeAt(i);
           }
-          bb = new (window.MozBlobBuilder || window.WebKitBlobBuilder)();
-          bb.append(ui8a.buffer);
-          _this.url = url.createObjectURL(bb.getBlob('image/png'));
+          _this.url = url.createObjectURL(new Blob([ui8a.buffer], {
+            type: 'image/png'
+          }));
           _this.el.style.backgroundImage = "url(" + _this.url + ")";
           return typeof url.revokeObjectURL === "function" ? url.revokeObjectURL(fileUrl) : void 0;
         });
diff --git a/script.coffee b/script.coffee
index 8783886a4..83d92009d 100644
--- a/script.coffee
+++ b/script.coffee
@@ -1590,10 +1590,8 @@ QR =
         ui8a = new Uint8Array l
         for i in  [0...l]
           ui8a[i] = data.charCodeAt i
-        bb = new (window.MozBlobBuilder or window.WebKitBlobBuilder)()
-        bb.append ui8a.buffer
 
-        @url = url.createObjectURL bb.getBlob 'image/png'
+        @url = url.createObjectURL new Blob [ui8a.buffer], type: 'image/png'
         @el.style.backgroundImage = "url(#{@url})"
         url.revokeObjectURL? fileUrl