A repeatable method for localizing cart and mini-cart copy — the buttons, labels, and empty states that keep shoppers moving toward checkout.
Subtotal wording, quantity labels, and the checkout button all live here. If any of them reads awkwardly in the shopper's language, momentum stalls one step before revenue.
The slide-out mini-cart is frequently a theme component with hardcoded strings that don't appear in Shopify's standard translation list, so it silently stays untranslated.
Inconsistent wording between cart and checkout — 'Continue to checkout' vs 'Proceed to payment' — makes the store feel unpolished and invites second-guessing.