Checkout Auto-fill

The challenge

Checkout forms that require visitors to manually select their country and state are a well-documented source of cart abandonment. Even one extra click introduces doubt. When the billing address section loads blank, many visitors — especially on mobile — give up before they start. The problem compounds for international customers who have to scroll through long country lists.

What you can achieve

• Country and state fields pre-filled when the checkout form loads
• Visitors go straight to entering card details without touching the address fields
• Fields remain fully editable — visitors can correct if detection is off
• Works with any React checkout form — Material UI components, or headless with your own UI

How it works

The react-country-state-fields package wraps VisitorAPI in country and state form fields, as Material UI components or headless with your own UI. On mount, it calls the API, detects the visitor’s country and region, and populates the relevant fields automatically. A spinner (or your own loading state, if headless) replaces the field while the data loads — typically under 100ms.

1. Install react-country-state-fields and visitorapi
2. Drop in the component with your project ID — no props or state management needed
3. Visitor lands on checkout — country and state are already filled