---
title: "Polaris web components migration guides now available for Checkout and Customer Account UI extensions"
url: https://daily.dev/posts/polaris-web-components-migration-guides-now-available-for-checkout-and-customer-account-ui-extension-ykdkvy1xc
source_url: https://shopify.dev/changelog/polaris-web-components-migration-guides-now-available-for-checkout-and-customer-account-ui-extensions
type: article
source: "Shopify Developer changelog"
published: 2026-05-13T13:48:54.442Z
updated: 2026-05-13T13:49:12.285Z
tags: ["shopify", "web-components", "preact"]
reading_time: 1
upvotes: 0
comments: 0
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Polaris web components migration guides now available for Checkout and Customer Account UI extensions

**[Shopify Developer changelog](https://daily.dev/sources/shopifychangelog)** · 1 min read · 0 upvotes · 0 comments

## Summary

Shopify has published migration guides for upgrading Checkout and Customer Account UI extensions to the latest API version using Polaris web components. The guides cover moving from React or JavaScript extension APIs to Preact, Polaris web components, and the global shopify object. Over 60 component-specific migration pages are included for components like Button, Checkbox, Banner, and View. Extensions using API versions earlier than 2025-10 should use these guides, as Polaris web components are the default from 2025-10 onward. Instructions for migrating checkout metafields to cart metafields are also provided.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://shopify.dev/changelog/polaris-web-components-migration-guides-now-available-for-checkout-and-customer-account-ui-extensions>

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---

Tags: [#shopify](https://daily.dev/tags/shopify), [#web-components](https://daily.dev/tags/web-components), [#preact](https://daily.dev/tags/preact)

[View this post on daily.dev](https://daily.dev/posts/polaris-web-components-migration-guides-now-available-for-checkout-and-customer-account-ui-extension-ykdkvy1xc)