---
title: CheckoutBrandingFontSize - GraphQL Admin
description: The font size.
api_version: 2026-10
source_url:
  html: >-
    https://shopify.dev/docs/api/admin-graphql/latest/objects/CheckoutBrandingFontSize
  md: >-
    https://shopify.dev/docs/api/admin-graphql/latest/objects/CheckoutBrandingFontSize.md
api_name: admin
api_type: graphql
type: object
---

# Checkout​Branding​Font​Size

object

Requires access to checkout branding settings and the shop must be on a Plus plan or a Development store plan.

The font size.

## Fields

* base

  [Float](https://shopify.dev/docs/api/admin-graphql/latest/scalars/Float)

  The base font size.

* ratio

  [Float](https://shopify.dev/docs/api/admin-graphql/latest/scalars/Float)

  The scale ratio used to derive all font sizes such as small and large.

***

## Map

### Fields with this object

* [CheckoutBrandingTypography.size](https://shopify.dev/docs/api/admin-graphql/latest/objects/CheckoutBrandingTypography#field-CheckoutBrandingTypography.fields.size)