--- title: Heading description: |- The heading component renders hierarchical titles to communicate the structure and organization of page content. Use heading to create section titles and content headers that help users understand information hierarchy and navigate content. Heading levels adjust automatically based on nesting within parent [section](/docs/api/checkout-ui-extensions/2025-07/web-components/layout-and-structure/section) components, ensuring meaningful and accessible page outlines without manual level management. api_version: 2025-07 api_name: checkout-ui-extensions source_url: html: https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/components/titles-and-text/heading md: https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/components/titles-and-text/heading.md --- Migrate to Polaris Version 2025-07 is the last API version to support React-based UI components. Later versions use [web components](https://shopify.dev/docs/api/checkout-ui-extensions/latest/polaris-web-components), native UI elements with built-in accessibility, better performance, and consistent styling with [Shopify's design system](https://shopify.dev/docs/apps/design). Check out the [migration guide](https://shopify.dev/docs/apps/build/checkout/migrate-to-web-components) to upgrade your extension. Heading Not supported in this version.