diff --git a/src/HttpLibrary/__init__.py b/src/HttpLibrary/__init__.py
index ae11328..c081a59 100644
--- a/src/HttpLibrary/__init__.py
+++ b/src/HttpLibrary/__init__.py
@@ -410,6 +410,20 @@ def response_header_should_not_equal(self, header_name, not_expected):
             'Response header "%s" was "%s" but should not have been.' % (
             header_name, actual)
 
+    def response_header_should_contain(self, header_name, should_contain):
+        """
+        Fails if the value of response header `header_name` does not contain
+        `should_contain`. Also fails if the last response does not have a
+        `header_name` header.
+        """
+        self.response_should_have_header(header_name)
+        actual = self.response.headers[header_name]
+        logger.debug('Testing whether "%s" contains "%s".' % (
+            actual, should_contain))
+         assert should_contain in actual, \
+            'Response header "%s" s value of "%s" should have contained "%s", but did not.' % (
+                header_name, actual, should_contain)    
+
     def log_response_headers(self, log_level='INFO'):
         """
         Logs the response headers, line by line.
@@ -551,6 +565,23 @@ def stringify_json(self, data):
         except ValueError, e:
             raise ValueError(
                 "Could not stringify '%r' to JSON: %s" % (data, e))
+    
+    def minify_json(self, data):
+        """
+        Converts JSON string to a minified JSON String
+
+        Example:
+        | ${data} =                   | Get Response Body|
+        | ${json_string}=             | Minify JSON      |  ${data}  |
+
+        `data` is the json string to convert to json
+        """
+
+        try:
+            return json.dumps(data, separators=(',',':'))
+        except ValueError, e:
+            raise ValueError(
+                "Could not minify '%r' to JSON: %s" % (data, e))
 
     @_with_json
     def get_json_value(self, json_string, json_pointer):