What is the "settings_schema.json" file used for?

The "settings_schema.json" file plays a critical role in making themes customizable for users through the Shopify theme editor. This file defines the settings that can be modified by the merchant, such as colors, fonts, and other layout options. By creating a structured JSON format in this file, developers can specify which settings should be available, what type of input is required (such as text fields, color pickers, or toggles), and even provide default values.

This flexibility enables store owners to personalize their storefronts without requiring any coding knowledge. Each entry in the "settings_schema.json" file corresponds to a setting that appears in the theme editor interface, further enhancing the user experience when customizing the look and feel of their online store. Thus, option B accurately captures the essence and purpose of the "settings_schema.json" file within the Shopify ecosystem.