diff --git a/README.md b/README.md
index f38b419..79ac824 100644
--- a/README.md
+++ b/README.md
@@ -44,6 +44,10 @@ $grid->picture()->gallery();
 //zoom effect
 $grid->picture()->lightbox(['zooming' => true]);
 $grid->picture()->gallery(['zooming' => true]);
+
+//width & height properties
+$grid->picture()->lightbox(['width' => 50, 'height' => 50]);
+$grid->picture()->gallery(['width' => 50, 'height' => 50]);
 ```
 
 ## Donate