Structured Data

Structured data is a set of machine-readable labels embedded in a page's code that state, unambiguously, what the page is about and what its key facts are: this is a Product; its name is X; its price is 24.00 in USD; it is InStock; its brand is Y. Humans never see it. Search engines and AI tools read it before, and sometimes instead of, the visible page. It's almost always written in a format called JSON-LD using the schema.org vocabulary, and Google documents exactly which types it uses and which fields they need.

Without structured data, a machine reading a product page has to guess: is "$24" a price, a size or a model number? Is this page a product, a category or an article? Most guess conservatively, which means skipping the page. With it, there's no guessing and no reason to skip. Missing or incomplete product structured data is the most common defect CataSEO finds on independent stores, and it's usually a template or platform setting rather than a page-by-page problem — which also means a single fix corrects the whole catalogue. Google's Rich Results Test shows in seconds whether a page has it and what's missing.