ranthmath with cdn network sitemap issue

Hi Harun,

Thanks for getting in touch with us.

Please use this filter in your theme’s functions.php file to include your CDN URLs in the sitemap:

/**
 * Filter to Add CDN Image URLs in the Sitemap
 *
 * @param string $src  Image URL.
 * @param object $post Post object.
 */
add_filter( 'rank_math/sitemap/xml_img_src', function( $src, $post ){
    $src = str_replace( 'http://domain.com', 'https://cdn.domain.com', $src );
    return $src;
}, 10, 2);

Do change the domain to your actual domain name.

Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.