Article
Checkout Extensibility Opens New Ways to Customize Checkouts on Shopify
Shopify · shopify.com Free Intermediate
Straight from Shopify on what checkout extensibility actually lets you build, UI extensions, Shopify Functions, the Branding API, without forking core checkout code. Essential context before you decide you need a third-party tool at all.
- Checkout UI extensions run in a sandbox and can't touch sensitive payment data or core checkout HTML.
- Shopify Functions let you customise discount/shipping logic server-side without a full custom build.
- Available only on Shopify Plus, a factor in the buy-vs-build-vs-native decision.