My post/pages sitemap only shows 1 image

Hello,

The Fusion Builder plugin adds the images in the shortcode and that’s the reason Rank Math is not able to read it. Please contact the Fusion Builder team and ask them to add the compatibility code using the following filter just like they are doing for other SEO plugins: https://rankmath.com/kb/filters-hooks-api-developer/#remove-change-images

For now to fix this on your site, please add following code in your theme’s functions.php file:

add_filter( 'rank_math/sitemap/urlimages', function( $images, $post_id ){
    $post    = get_post( $post_id );
        $content = $post->post_content;

        // For images from fusion_imageframe shortcode.
        if ( preg_match_all( '/\[fusion_imageframe(.+?)?\](?:(.+?)?\[\/fusion_imageframe\])?/', $content, $matches ) ) {

            foreach ( $matches[0] as $image_frame ) {
                $src = '';

                if ( false === strpos( $image_frame, '<img' ) && $image_frame ) {

                    $pattern = get_shortcode_regex();
                    $matches = [];
                    preg_match( "/$pattern/s", $image_frame, $matches );
                    $src = $matches[5];
                } else {
                    preg_match( '/(src=["\'](.*?)["\'])/', $image_frame, $src );

                    if ( array_key_exists( '2', $src ) ) {
                        $src = $src[2];
                    }
                }

                if ( ! in_array( $src, $images, true ) ) {
                    $images[] = [
                        'src' => $src,
                    ];
                }
            }
        }

        // For images from newer structure of gallery element.
        if ( preg_match_all( '/\[fusion_gallery_image(.+?)?\](?:(.+?)?\[\/fusion_gallery_image\])?/', $content, $matches ) ) {
            foreach ( $matches[0] as $item ) {
                $atts = shortcode_parse_atts( $item );
                if ( isset( $atts['image'] ) && ! empty( $atts['image'] ) ) {
                    $images[] = [
                        'src' => $atts['image'],
                    ];
                } elseif ( isset( $atts['image_id'] ) && ! empty( $atts['image_id'] ) ) {
                    $images[] = [
                        'src' => wp_get_attachment_url( $atts['image_id'] ),
                    ];
                }
            }
        }

        // For images from older structure fusion_gallery shortcode.
        if ( preg_match_all( '/\[fusion_gallery(.+?)?\](?:(.+?)?\[\/fusion_gallery\])?/', $content, $matches ) ) {
            foreach ( $matches[0] as $image_gallery ) {
                $atts = shortcode_parse_atts( $image_gallery );
                if ( isset( $atts['image_ids'] ) && ! empty( $atts['image_ids'] ) ) {
                    $image_ids = explode( ',', $atts['image_ids'] );
                    foreach ( $image_ids as $image_id ) {
                        $images[] = [
                            'src' => wp_get_attachment_url( $image_id ),
                        ];
                    }
                }
            }
        }

        // For images from fusion_image_before_after shortcode.
        if ( preg_match_all( '/\[fusion_image_before_after(.+?)?\](?:(.+?)?\[\/fusion_image_before_after\])?/', $content, $matches ) ) {
            foreach ( $matches[0] as $item ) {
                $atts = shortcode_parse_atts( $item );
                if ( isset( $atts['before_image'] ) && ! empty( $atts['before_image'] ) ) {
                    $images[] = [
                        'src' => $atts['before_image'],
                    ];
                }
                if ( isset( $atts['after_image'] ) && ! empty( $atts['after_image'] ) ) {
                    $images[] = [
                        'src' => $atts['after_image'],
                    ];
                }
            }
        }

        return $images;
}, 10, 2 );

I hope that helps. Please let us know if you need any further assistance.

Thank you.