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Glossary

What Is Structured Data

Structured data is code added to your website that helps search engines understand your content. Learn what structured data is and how it improves visibility.

Definition

Structured data is additional code added to your web pages that tells search engines exactly what your content means, not just what it says. It uses a standardised vocabulary called Schema.org to label things like products, reviews, events, FAQs, and business details in a way machines can reliably interpret. For example, rather than hoping Google figures out that "4.8" on your page is a customer rating, structured data explicitly marks it as a rating value attached to a specific product.

Why It Matters

When search engines understand your content precisely, they can display it more prominently. Structured data powers the rich results you see in Google: star ratings beneath product listings, FAQ dropdowns, event dates, recipe cards, and business information panels. These enhanced listings take up more space in search results and typically earn higher click-through rates than plain blue links. Without structured data, your pages compete on title and description alone, even if the content itself is rich with useful detail. This is one of the technical foundations covered in our wider explanation of search engine optimisation.

Beyond search results, structured data also helps voice assistants and AI tools pull accurate answers from your site, which is increasingly important as more users interact with search through conversational interfaces.

Example

A restaurant adds structured data to their website marking up their name, address, opening hours, menu items, and customer reviews. When someone searches for restaurants in the area, Google displays a rich panel showing the restaurant’s rating, price range, hours, and a direct link to their menu, all pulled from the structured data. A competitor without structured data appears as a plain listing underneath, with none of that detail visible.

Structured data sits alongside the other machine-readable signals you give search engines, including the XML sitemap that lists your pages, and you can find more terms like it in our glossary.

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