Pre Load Product Images WooCommerce

Pre Load Product Images.php

add_action('wp_head', 'rl_add_preload', 1);
function rl_add_preload() {

    global $product;
    
    if (is_product() && isset($product)) {
        $image = wp_get_attachment_image_src($product->get_image_id(), "edit");

        if ($image && is_array($image) && isset($image[0])) {
            echo PHP_EOL . '<link rel="preload" as="image" href="' . esc_url($image[0]) . '">' . PHP_EOL;
        }
    }
}