diff --git a/ox/api.py b/ox/api.py
index 159aec7..ec6f428 100644
--- a/ox/api.py
+++ b/ox/api.py
@@ -151,7 +151,7 @@ class API(object):
                     fd.write(chunk)
             shutil.move(tmpname, filename)
 
-    def upload_chunks(self, url, filename, data=None):
+    def upload_chunks(self, url, filename, data=None, silent=False):
         form = MultiPartForm()
         if data:
             for key in data:
@@ -188,26 +188,31 @@ class API(object):
                 try:
                     data = self._json_request(uploadUrl, form)
                 except KeyboardInterrupt:
-                    print("\ninterrupted by user.")
+                    if not slient:
+                        print("\ninterrupted by user.")
                     sys.exit(1)
                 except:
-                    print("uploading chunk failed, will try again in 5 seconds\r", end='')
+                    if not slient:
+                        print("uploading chunk failed, will try again in 5 seconds\r", end='')
                     sys.stdout.flush()
                     data = {'result': -1}
                     time.sleep(5)
                 if data and 'status' in data:
                     if data['status']['code'] == 403:
-                        print("login required")
+                        if not slient:
+                            print("login required")
                         return False
                     if data['status']['code'] != 200:
-                        print("request returned error, will try again in 5 seconds")
+                        if not slient:
+                            print("request returned error, will try again in 5 seconds")
                         if self.DEBUG:
                             print(data)
                         time.sleep(5)
                 if data and data.get('result') == 1:
                     done += len(chunk)
                     if data.get('offset') not in (None, done):
-                        print('server offset out of sync, continue from', data['offset'])
+                        if not slient:
+                            print('server offset out of sync, continue from', data['offset'])
                         done = data['offset']
                         f.seek(done)
                     chunk = f.read(CHUNK_SIZE)