CDN images in sitemap

Hi Jeremy,

I’ve tried the code you sent, but unfortunately, it still doesn’t work.

Here is a sample post where all images are served from the CDN, but Rank Math isn’t detecting them (all images on the website are served via CDN):
https://stage5.nowfashion.com/masha-ma-ready-to-wear-fall-winter-2019-paris/

This post is also listed at the top of this sitemap page:
https://stage5.nowfashion.com/post-sitemap17.xml

All posts are merked that they have just one image (the featured one) but not all the others included.

I’ve granted you admin privileges, so you should now have access to the theme files.

Looking forward to your assistance.

Good morning, and thank you again for your support.

I’ve tried again but still haven’t had any luck. After extensive testing, I discovered that the issue is related to the plugin “WP Offload Lite.” When I disable this plugin, all the images appear correctly in the sitemap. However, without the plugin, my site is broken because the images are missing, they are stored externally.

So, the problem isn’t that I’m using a CDN, but rather that the images are offloaded to an external bucket (DigitalOcean).

I may have found a solution. I’ve implemented the following code, and now it includes the images from the external bucket in the sitemap. Could you guys take a look and share your thoughts? If it works, feel free to use it, it might help other users experiencing issues with WP Offload Media and Rank Math compatibility.

add_filter( 'rank_math/sitemap/entry', function( $url, $type, $object ) {
    if ( 'post' === $type ) {
        $post_id = $object->ID;

        // Set the arguments for get_posts
        $args = array(
            'post_type'              => 'attachment',
            'post_mime_type'         => 'image',
            'post_parent'            => $post_id,
            'posts_per_page'         => -1,
            'fields'                 => 'ids', // Get only the IDs to improve performance
            'no_found_rows'          => true,  // Do not count the total number of results
            'update_post_meta_cache' => false,
            'update_post_term_cache' => false,
        );

        $attachment_ids = get_posts( $args );

        if ( ! empty( $attachment_ids ) ) {
            foreach ( $attachment_ids as $attachment_id ) {
                $image_url = wp_get_attachment_url( $attachment_id );
                if ( $image_url ) {
                    $url['images'][] = array(
                        'src' => $image_url,
                    );
                }
            }
        }
    }
    return $url;
}, 10, 3 );