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 MUI-based checkout form in a React app

How it works

The react-country-state-fields package wraps VisitorAPI with React-native MUI components. On component mount, it calls the API, detects the visitor’s country and region, and populates the relevant dropdowns automatically. A spinner 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