The Shopify Checkout Stack Worth Using in 2025

Shopify's one-page checkout, rolled out broadly in 2024, reduced average checkout completion time by 24% in internal Shopify data. If you have not audited your checkout configuration since then, you are likely leaving conversions on the table -- not from your theme, but from how your checkout is set up.

Shop Pay is your highest-converting checkout

Shop Pay converts 1.72x better than guest checkout on average, according to Shopify's own data. The reason is autofill: buyers with a Shop Pay account skip the address and payment form entirely. If you are not prominently surfacing Shop Pay as the first option on your cart page and checkout, you are hiding your best conversion tool. Our themes surface Shop Pay above all other payment options by default.

Your checkout is a Shopify product, not your product. The best thing you can do is get out of the way and let Shopify's infrastructure do the work.

Checkout extensions to actually use

Checkout extensions -- the replacement for checkout.liquid -- let you add content to Shopify's native checkout without touching core files. The extensions worth implementing: a trust badge block above the payment form, a delivery date estimate below the shipping selector, and an upsell block after the order summary. Each of these has documented lift in checkout completion and average order value.

The post-purchase window

The order confirmation page is the highest-trust moment in the buyer relationship. A buyer who just converted is more likely to buy again than any cold visitor. Post-purchase upsell extensions (native in Shopify, no app required) can add 8 to 15% to average order value with zero friction -- the buyer does not re-enter payment details, it charges the same card. If you are not using this, enable it today.