In simple English
This tool creates the final payment screen for an online store. Customers enter their shipping details and credit card information here to complete a purchase. It loads fast and keeps buyers on a single page so they do not abandon their cart. You need a BigCommerce store and developer skills to install and customize it. It is free to use under an open-source licence.
What it is
Checkout JS is a browser-based application built with TypeScript that powers the standard checkout flow for BigCommerce. It gives store owners a customizable user interface for handling payments and shipping choices.
What it is good for
This is for store owners and developers who want to modify the default checkout page on a BigCommerce shop. It lets you change how the payment screen looks and behaves without starting from scratch.
- Official checkout application maintained by BigCommerce.
- Designed to load quickly and reduce cart abandonment.
- Open-source MIT licence lets you inspect and modify the code.
- Requires Node 24 and NPM 11 to build from source.
- Only works with the BigCommerce platform.
- Requires a Unix-based operating system or Windows Subsystem for Linux.
The default closed-source checkout flow on BigCommerce
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npm ci npm run dev