Checkout UI Extensions
Customize Shopify checkout safely
Shopify / Commerce · OSS/MIT
Reviewed 2026-08-18
What's Good
Extension points cover key checkout moments: cart, shipping, payment, and order status. The component library ensures visual consistency. The API handles state without direct DOM manipulation.
The Catch
The sandboxed environment limits what is possible. Some desired customizations are not supported by extension points.
Verdict
The only way to customize checkout—work within the limits.
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