Metafields

What are metafields in Shopify?

Metafields are a way to store additional, custom data on Shopify objects - products, variants, customers, orders, collections, and pages - beyond the standard fields Shopify provides by default. Where Shopify's standard product fields cover title, description, price, images, and inventory, metafields let merchants attach any additional data they need: ingredient lists, care instructions, certifications, size guides, technical specifications, warranty information, or any structured data that needs to be stored against a product and displayed on the storefront.

Metafields were historically a developer-only feature requiring API access or third-party apps. Since Shopify's 2021 Online Store 2.0 update, metafields can be created, managed, and displayed without code - directly in the Shopify admin under Settings > Custom Data, and then surfaced on product pages through theme editor blocks that reference the metafield data.

Why metafields matter for Shopify brands

Metafields enable structured, consistent product information that improves both customer experience and SEO. A supplement brand using metafields for serving size, ingredient list, and third-party certifications can surface this data consistently across all products without relying on unstructured product description text. A fashion brand using metafields for material composition, country of origin, and care instructions can display them in consistent tabbed sections rather than embedding them unpredictably in product descriptions.

For technical SEO, metafields power structured data markup - Google's ability to understand your product's attributes, which influences eligibility for rich results in Shopping. For paid advertising, metafield data fed into your Google Merchant Center product feed through Shopify's integration improves product listing ad quality and eligibility. For personalisation and recommendation engines, metafield data enables matching products to customer preferences at a level of specificity that unstructured description text cannot support. Metafields are also foundational for brands building complex headless or composable storefronts, where structured product data is essential for front-end rendering across multiple surfaces.