diff --git a/src/uxbox/util/zip.cljs b/src/uxbox/util/zip.cljs
new file mode 100644
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+++ b/src/uxbox/util/zip.cljs
@@ -0,0 +1,24 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) 2016 Andrey Antukh <niwi@niwi.nz>
+
+(ns uxbox.util.zip
+  "Helpers for make zip file (using jszip)."
+  (:require [vendor.jszip]
+            [promesa.core :as p]))
+
+(defn build*
+  [files resolve reject]
+  (let [zipobj (js/JSZip.)]
+    (run! (fn [[name content]]
+            (.file zipobj name content))
+          files)
+    (-> (.generateAsync zipobj #js {:type "blob"})
+        (.then resolve reject))))
+
+(defn build
+  [files]
+  (p/promise (fn [resolve reject]
+               (build* files resolve reject))))