Customising the thank you page title is relatively straight forward and a quick win in improving your Customer Experience (CX). By default, “Order Received” is very generic and actually quite boring. Spice up you thank you page title by implementing this solution to make your customers feel like they have made the right choice in buying form your store.
/**
* Snippet Name: Change the Order Received title on the WooCommerce Thank You Page.
* Snippet Author: ecommercehints.com
*/
add_filter( 'woocommerce_endpoint_order-received_title', 'ecommercehints_thank_you_title' );
function ecommercehints_thank_you_title($old_title) {
return 'All Done!';
}