---
title: >-
  Customize line items in Checkout and Customer Accounts order summary using new
  Checkout Branding API settings - Shopify developer changelog
description: >-
  Shopify’s developer changelog documents all changes to Shopify’s platform.
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source_url:
  html: >-
    https://shopify.dev/changelog/customize-line-items-in-checkout-and-customer-accounts-order-summary-using-new-checkout-branding-api-settings
  md: >-
    https://shopify.dev/changelog/customize-line-items-in-checkout-and-customer-accounts-order-summary-using-new-checkout-branding-api-settings.md
metadata:
  effectiveApiVersion: 2025-01
  affectedApi:
    - displayName: Admin GraphQL API
      handle: admin-graphql
  primaryTag:
    displayName: API
    handle: api
  secondaryTag:
    displayName: Update
    handle: update
  indicatesActionRequired: false
  createdAt: '2024-12-05T12:29:23-05:00'
  postedAt: '2024-12-06T15:00:00-05:00'
  updatedAt: '2024-12-05T14:49:28-05:00'
  effectiveAt: '2024-12-06T15:00:00-05:00'
---

December 6, 2024

Tags:

* Admin GraphQL API
* 2025-01

# Customize line items in Checkout and Customer Accounts order summary using new Checkout Branding API settings

**As of Dec 4th, 2024**, you can use the settings under checkoutBrandingInput (see: merchandiseThumbnail) in the Checkout Branding API to modify the appearance of line items in Checkout and Customer Accounts order summary for Shopify Plus merchants.

These line-item customizations include the ability to configure custom aspect ratios for product thumbnails, adjust image fit, and modify the background color of quantity badges. 

Note: The aspect ratio setting is only available on the current unstable release. 

Learn more under [checkoutBrandingInput](https://shopify.dev/docs/api/admin-graphql/2025-01/mutations/checkoutBrandingUpsert#argument-checkoutbrandinginput) in the Checkout Branding API documentation.