Change the “Place order” button text
The checkout button says “Complete purchase” (or whatever you write) instead of “Place order”.
<?php
add_filter( 'woocommerce_order_button_text', static fn() => 'Complete purchase' );
Good to know
Write your own text. Payment methods such as PayPal can replace the button with their own. For the classic checkout; the block checkout has a setting for this.
In these packs
- WooCommerce: cart and checkout: Free-shipping progress, coupon links, quantity limits and a cleaner checkout.