diff --git a/muk_utils/__manifest__.py b/muk_utils/__manifest__.py
index 235041b..6702873 100644
--- a/muk_utils/__manifest__.py
+++ b/muk_utils/__manifest__.py
@@ -20,7 +20,7 @@
 {
     "name": "MuK Utils",
     "summary": """Utility Features""",
-    "version": '12.0.1.0.14',   
+    "version": '12.0.1.0.15',   
     "category": 'Extra Tools',   
     "license": "AGPL-3",
     "author": "MuK IT",
diff --git a/muk_utils/tools/__init__.py b/muk_utils/tools/__init__.py
index d4aaa2c..894817f 100644
--- a/muk_utils/tools/__init__.py
+++ b/muk_utils/tools/__init__.py
@@ -17,4 +17,5 @@
 #
 ###################################################################################
 
+from . import file
 from . import json
\ No newline at end of file
diff --git a/muk_utils/tools/file.py b/muk_utils/tools/file.py
new file mode 100644
index 0000000..a7348e5
--- /dev/null
+++ b/muk_utils/tools/file.py
@@ -0,0 +1,61 @@
+###################################################################################
+# 
+#    Copyright (C) 2018 MuK IT GmbH
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+###################################################################################
+
+import os
+import io
+import base64
+import shutil
+import urllib
+import logging
+import tempfile
+import mimetypes
+
+from odoo.tools import config
+from odoo.tools.mimetypes import guess_mimetype
+
+_logger = logging.getLogger(__name__)
+
+def unique_name(name, names, escape_suffix=False):
+    def compute_name(name, suffix, escape_suffix):
+        if escape_suffix:
+            name, extension = os.path.splitext(name)
+            return "%s(%s)%s" % (name, suffix, extension)
+        else:
+            return "%s(%s)" % (name, suffix)
+    if not name in names:
+        return name
+    else:
+        suffix = 1
+        name = compute_name(name, suffix, escape_suffix)
+        while name in names:
+            suffix += 1
+            name = compute_name(name, suffix, escape_suffix)
+        return name
+    
+def guess_extension(binary, filename, mimetype):
+    extension = None
+    if not mimetype and not filename:
+        mimetype = guess_mimetype(binary, default=False)
+    if not mimetype and filename:
+        mimetype = mimetypes.guess_type(urllib.request.pathname2url(filename))[0]
+    if filename:
+        extension = os.path.splitext(filename)[1][1:].strip().lower() 
+    if not extension and mimetype and mimetype != 'application/octet-stream':
+        extension = mimetypes.guess_extension(mimetype)[1:].strip().lower()
+    return extension
\ No newline at end of file