How to set the default embed image size
If you add this to functions.php, this will update the options as set. function custom_image_size() { // Set default values for the upload media box update_option(‘image_default_align’, ‘center’ ); update_option(‘image_default_size’, ‘large’ ); } add_action(‘after_setup_theme’, ‘custom_image_size’); You can update the options as you need.