Check the schema markup on any store page.

Product schema is structured data, usually a JSON-LD block in the page, that states a product name, image, price, currency, stock and identifiers in a form search engines read directly. Google uses it for merchant listings in shopping results and for product snippets with price and stars.

Every property Google lists as required or recommended for merchant listings, the rating rules for product snippets, whether the price is a plain number above zero, whether the currency, availability and condition values are ones Google accepts, whether the GTIN has a valid check digit, and whether the page blocks indexing or names another canonical address.

No. Google Rich Results Test renders the page as Googlebot and is the final word on eligibility. This checker reads the markup a page sends and explains each gap in plain language, with the fix, and it catches problems Google only warns about, such as an expired sale date or a price that disagrees with the page.

Google requires only a name, an image and an offer with a price and currency for merchant listings. Recommended properties such as brand, GTIN, availability, shipping and returns are not mandatory, but they decide which details Google can show and how well your product matches searches for it.

Often it is. It usually means the theme and an app both add markup, and when the two disagree on price or stock Google has to choose. Keep one complete block. A product group with variants is fine and is counted as one product.

Yes. Product and its offer, shipping, returns and ratings get the deepest check, because they decide shopping results. Organization, WebSite, BreadcrumbList, FAQPage, Article, VideoObject, LocalBusiness and Review markup are each checked against Google’s own rules, so you can run your home page, collections and blog posts through the same schema checker.

Yes. Some older themes print schema as microdata attributes in the HTML instead of a JSON-LD block. The checker reads both and judges them by the same rules, and it tells you which one it found.

The Schema Markup Validator at validator.schema.org checks that markup follows the schema.org vocabulary. This checker goes further for stores: it checks the properties Google requires for shopping results and stars, catches values Google rejects, such as a price with a currency sign or an invalid GTIN, and says how to fix each one on Shopify or WooCommerce.

No. It sees what a visitor sees without logging in. Some stores block automated requests at their firewall; the checker says when the site refused to show the page.