Your task
On your platform, fix your five product pages, with the GTIN, brand and category in the right fields. Then test them again, and fill in the last columns of the worksheet's Product pages tab.
Track it in the course worksheet.
Sources
Checked 19 October 2026.
- Shopify.dev, Liquid filter
structured_data(https://shopify.dev/docs/api/liquid/filters/structured_data):Product, orProductGroupwith variants; the example output has brand, category, description, image, name, URL and an offer with price, currency and availability. GTIN, shipping and returns do not appear in the example. The Dawn theme uses it insections/main-product.liquid. - Shopify Help Center, «Product details page» (https://help.shopify.com/en/manual/products/details/product-details-page): barcodes in the Inventory section, «You can add up to 20 barcodes to a product or a variant» (GTIN, UPC, EAN, ISBN); the category comes from the Standard Product Taxonomy, which unlocks category metafields.
- Shopify Help Center, «Agentic storefronts» and «Shopify Catalog requirements»: «active by default for eligible stores»; «Your store must be on the Starter plan or higher, and your store can't be in private mode.»
- WooCommerce Developer Blog, 21 August 2024, «WooCommerce 9.2» (https://developer.woocommerce.com/2024/08/21/woocommerce-9-2-a-better-experience-for-all-users/): «A new field called global_unique_id (currently labeled GTIN, UPC, EAN or ISBN) was added… available both for main products and variations.» WooCommerce outputs Product data by itself (
includes/class-wc-structured-data.phpin WooCommerce core; see also How to Get Your WooCommerce Store Cited by ChatGPT (2026 Guide)). - WooCommerce admin: brands under Products → Brands; on installation WooCommerce creates the refund and returns policy page as a draft (checked on a WooCommerce test store, 16 October 2026).
- Wix Help Center, «Wix Stores: Optimizing your SEO for product pages»: «When you create a Wix Stores product page, Wix automatically creates a Product preset markup for it.»; «Understanding preset markups»: edited from SEO settings → product pages → structured data markup, up to 5 markups. llms.txt generated by Wix and the robots.txt editor (Wix Help Center, checked 14 October 2026, in How to Get Your Wix Store Cited by ChatGPT (2026 Guide)).
- CiteProof: Shopify app (Product pages: score, rewrite, alt text and schema, Pages, policies and blog articles), WooCommerce plugin (How to Get Your WooCommerce Store Cited by ChatGPT (2026 Guide)), Wix app (Fixes and articles on Wix: Wix shares no store policies with apps).
End of module 7: the quiz
Five questions on the “E-commerce” module. Get four right and you pass.
Take the module 7 quiz