Shopify App Extensions and Theme App Blocks

App extensions and theme app blocks are the modern, clean way for Shopify apps to integrate with a store — no fragile code snippets pasted into themes.

Theme app blocks

Theme app blocks let merchants add an app's features into their theme through the editor, with a click. There is no manual code editing, and the block can be moved or removed safely — which merchants love and which keeps stores upgrade-safe.

Other extension points

• Admin extensions — surface app features inside the Shopify admin.
• Checkout extensions — add functionality to checkout (on Plus).
• Functions — custom discount, shipping and validation logic.

Why it matters

Building on extensions instead of hacks means apps stay fast, secure and compatible with Shopify updates. It is better for merchants and for the app's long-term health. Experts Cabin builds Shopify apps with proper extensions, so adding features is clean and click-simple.