--- 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: 2026-04 api_name: checkout-ui-extensions source_url: html: https://shopify.dev/docs/api/checkout-ui-extensions/latest/targets/block/purchase-thank-you-block-render md: https://shopify.dev/docs/api/checkout-ui-extensions/latest/targets/block/purchase-thank-you-block-render.md --- purchase.​thank-you.​block.​render Not supported in this version.