Shopify Checkout Extensibility: Customize Your Checkout Without Breaking Upgrades

Shopify’s checkout is famous for its speed and high conversion rates, but merchants often need extra fields, loyalty perks or post‑purchase upsells. Historically, Shopify Plus stores customized the checkout.liquid file to add banners and scripts. That method is now deprecated and will stop working by January 2026. To future‑proof your store, you need to embrace […]