A custom banner is a notice that you can display to customers. For example, you might want to show a banner that indicates that items are final sale and can't be returned or exchanged. This guide introduces how custom banners work, and describes the available resources that you can use to build custom banners.
How it worksAnchor link to section titled "How it works"
Getting startedAnchor link to section titled "Getting started"
Follow our tutorial to learn how to build custom banners in checkout.
Developer tools and resourcesAnchor link to section titled "Developer tools and resources"
Explore the following developer tools and resources to get familiar with building custom banners.
Checkout UI extensions API reference
Consult the API reference for checkout UI targets and their respective types.
Components for checkout UI extensions
Learn about the components that are available in checkout UI extensions.