diff --git a/ui-definitions/settings-image.php b/ui-definitions/settings-image.php
index 8915bd45b..5883a7ae2 100644
--- a/ui-definitions/settings-image.php
+++ b/ui-definitions/settings-image.php
@@ -25,6 +25,7 @@
 						'title'        => __( 'Image optimization', 'cloudinary' ),
 						'tooltip_text' => __( 'Images will be delivered using Cloudinary’s automatic format and quality algorithms for the best tradeoff between visual quality and file size. Use Advanced Optimization options to manually tune format and quality.', 'cloudinary' ),
 						'description'  => __( 'Optimize images on my site.', 'cloudinary' ),
+						'default'      => 'on',
 						'attributes'   => array(
 							'data-context' => 'image',
 						),
diff --git a/ui-definitions/settings-video.php b/ui-definitions/settings-video.php
index 5c48e6ded..f4b6fbb19 100644
--- a/ui-definitions/settings-video.php
+++ b/ui-definitions/settings-video.php
@@ -102,6 +102,7 @@
 						'title'        => __( 'Video optimization', 'cloudinary' ),
 						'tooltip_text' => __( 'Videos will be delivered using Cloudinary’s automatic format and quality algorithms for the best tradeoff between visual quality and file size. Use Advanced Optimization options to manually tune format and quality.', 'cloudinary' ),
 						'description'  => __( 'Optimize videos on my site.', 'cloudinary' ),
+						'default'      => 'on',
 						'attributes'   => array(
 							'data-context' => 'video',
 						),