DaylytixStructured data is one of those SEO terms that sounds far more technical than it is. In practice, it’s just a standardised way of labelling the content on a page so search engines understand exactly what they’re looking at - that this is a product with this price, that this is a recipe with these ingredients, that this is an event on this date. Add it well and your pages become eligible for the eye-catching rich results that win clicks.
What structured data actually is
Search engines read your page’s text, but text is ambiguous. Structured data removes the ambiguity by describing content using an agreed vocabulary - schema.org - that Google, Bing and others all understand. It’s metadata: extra labels in the page code that say “this string is a price, that one is an author, this is a star rating.”
JSON-LD: the format Google recommends
There are three ways to write structured data - JSON-LD, Microdata and RDFa. Google’s introduction to structured data says all three are fine as long as the markup is valid, but recommends JSON-LD as the easiest to implement and maintain. It’s a self-contained block of JSON you drop into the page’s code, separate from your HTML, so it doesn’t tangle with your markup or templates.
What rich results does it unlock?
Structured data is what makes the enhanced listings you see in search possible:
- Star ratings from Review or AggregateRating markup
- Product price and availability
- Breadcrumbs in place of the raw URL
- Recipe and event listings
Google retires features too: since 2023, FAQ rich results show only for well-known government and health sites, HowTo rich results are no longer shown, and the sitelinks search box was removed in November 2024. Check Google’s current list before you build markup for a feature.
Rich results take up more space, and Google’s own case studies report higher click-through rates: Rotten Tomatoes measured 25% more clicks on pages with structured data, and Nestlé 82% more on pages shown as rich results.
Tip: Structured data is not a ranking shortcut. Valid markup only makes a page eligible for rich results - Google decides when to show them - so measure the effect on clicks in Search Console rather than expecting a ranking jump.
How to add and validate structured data
The process is simple: choose the schema type that matches the page, write the JSON-LD, paste it into the <head>, and test it in Google’s Rich Results Test and the Schema.org Validator before shipping. Invalid markup can make the page ineligible for the rich result you wanted, so never skip validation.
Adding markup by hand works for a few pages. Across a whole site, a schema markup generator detects each page’s type and produces valid JSON-LD in bulk - including the Organization, WebSite and Breadcrumb markup most sites forget.
Frequently asked questions
What is structured data in SEO?
It’s a standardised way of labelling page content using the schema.org vocabulary so search engines understand it precisely - and can show rich results like star ratings, FAQs and product cards.
Is structured data a ranking factor?
Not directly. It makes pages eligible for rich results, which can earn a higher click-through rate - Google’s own case studies show gains of 25% and more.
What’s the difference between structured data and schema markup?
They’re used interchangeably. ‘Structured data’ is the concept; ‘schema markup’ is the schema.org implementation of it, usually in JSON-LD.