---
title: purchase.thank-you.block.render
description: |-
  A [block extension target](/docs/api/checkout-ui-extensions/extension-targets-overview#block-extension-targets) that renders exclusively on the **Thank you** page. Unlike static extension targets, block extension targets render where the merchant sets them using the [checkout editor](/docs/apps/checkout/test-ui-extensions#test-the-extension-in-the-checkout-editor).

    The [supported locations](/docs/api/checkout-ui-extensions/extension-targets-overview#supported-locations) for block extension targets can be previewed during development by [using a URL parameter](/docs/apps/checkout/best-practices/testing-ui-extensions#block-extension-targets).
api_version: 2025-07
api_name: checkout-ui-extensions
source_url:
  html: https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/targets/block/purchase-thank-you-block-render
  md: https://shopify.dev/docs/api/checkout-ui-extensions/2025-07/targets/block/purchase-thank-you-block-render.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.

purchase.​thank-you.​block.​render

Not supported in this version.