Shopify Checkout Extensions: What You Can Actually Change
Checkout extensibility replaced checkout.liquid. Here is what the extension points really let you do, and where the walls are.
- 8 min read
Frontend developer 🖥️ building e-commerce front-ends with Shopify, React & WordPress — 5 years of custom storefronts, widgets and checkout flows.
Notes from building e-commerce front-ends: Shopify checkout extensions, headless storefronts, content modelling and the performance work that decides whether a store feels fast.
Checkout extensibility replaced checkout.liquid. Here is what the extension points really let you do, and where the walls are.
Server components, the Storefront API and a cart that survives a refresh — the parts that actually decide whether a headless build is worth it.
Size guides, FAQs, ingredient tables — structured content that merchants can edit, without bolting another CMS onto the stack.
Most slow Shopify themes are not slow because of Liquid. They are slow because of what the theme asks the browser to do after Liquid is done.
The offer after the order is the cheapest one you will ever show. It is also the easiest one to ruin.
LCP, CLS and INP, translated into the things you actually change in a product template.
A domain and hosting are two different purchases, and the price on the front page is not the one you keep paying. What to check before you buy.