HTML API

Big Cartel’s flexible HTML API lets you customize your store using the same powerful tools we used to create the default themes.

Layout & Pages

Your store’s layout and pages are where the HTML API is used.

Basics

Before you can build a great custom store, you first need to learn the basics of using our HTML API.

Variables

Variables are used to provide data about your store, products, theme, and everything else. Most variables are available to all pages, but some are only available on certain pages.

Filters

Filters are simple methods to format or manipulate variables and other output.