WordPress Version: 6.1
/**
* Adds `max-image-preview:large` to the robots meta tag.
*
* This directive tells web robots that large image previews are allowed to be
* displayed, e.g. in search engines, unless the blog is marked as not being public.
*
* Typical usage is as a {@see 'wp_robots'} callback:
*
* add_filter( 'wp_robots', 'wp_robots_max_image_preview_large' );
*
* @since 5.7.0
*
* @param array $robots Associative array of robots directives.
* @return array Filtered robots directives.
*/
function wp_robots_max_image_preview_large(array $robots)
{
if (get_option('blog_public')) {
$robots['max-image-preview'] = 'large';
}
return $robots;
}