diff --git a/src/UriExtensions/UriExtensions.cs b/src/UriExtensions/UriExtensions.cs
new file mode 100644
index 0000000..be5bab5
--- /dev/null
+++ b/src/UriExtensions/UriExtensions.cs
@@ -0,0 +1,18 @@
+
+using System;
+using System.Web;
+
+namespace EduitorNetCore.UriExtensionMethods
+{
+    public static class UriExtensions
+    {
+        public static Uri AddParameter(this Uri url, string paramName, string paramValue)
+        {
+            var uriBuilder = new UriBuilder(url);
+            var query = HttpUtility.ParseQueryString(uriBuilder.Query);
+            query[paramName] = paramValue;
+            uriBuilder.Query = query.ToString();
+            return uriBuilder.Uri;
+        }
+    }
+}