Schema.org product image for external featured image

WooCommerce only populates schema.org product image metadata if it finds an attachment image inside media library. It doesn’t if you use an external featured image by URL.

I think the issue core is here (“class-wc-structured-data.php”):

$shop_name = get_bloginfo( ‘name’ );
$shop_url = home_url();
$currency = get_woocommerce_currency();
$permalink = get_permalink( $product->get_id() );
$image = wp_get_attachment_url( $product->get_image_id() );

Don’t you know how to workaround this limitation?

I’ve got a premium plugin which takes product datas from different affiliate merchant to create a Woocommerce product page with price comparison.