Schema Markup: How Structured Data Boosts Your SEO

Key Facts at a Glance

• Google Search Central supports JSON-LD, Microdata and RDFa for structured data, and recommends JSON-LD when a site's setup allows it because it is the easiest option to implement and maintain at scale.
• Structured data helps Google understand a page and can make that page eligible for enhanced search displays, but Google does not guarantee that a rich result will appear.
• Google no longer shows FAQ rich results in Search. Its documentation changelog says the feature stopped appearing from 7 May 2026.
• Google's current structured data gallery includes types such as Article, Breadcrumb, Event, Job posting, Local business, Organization, Product, Recipe, Review snippet and Video.
• Structured data should describe content that readers can actually see on the page and must not be misleading, according to Google's general structured data guidelines.

What Schema Markup Actually Does

Schema markup, often called structured data, is code that describes the meaning of content on a page in a format search engines can interpret. For a business website, that can help Google recognise that a page is about a local business, a product, an event, an article, an organisation or another supported type.

The important distinction is that structured data does not create a ranking promise. Its role is to help Google understand the page and, for supported types, make that page eligible for richer presentation in search results. Google's general structured data guidelines are clear that even valid markup does not guarantee that an enhanced result will appear.

Google Search Central supports three formats: JSON-LD, Microdata and RDFa. Google recommends JSON-LD when the site's setup allows it because it is easier for website owners to implement and maintain at scale. JSON-LD is placed inside a script tag in either the head or body of the page, rather than being woven through the visible HTML content.

Eligibility also depends on completeness. Google's structured data introduction says a page must contain all required properties for the relevant type before it can be eligible for enhanced display.

Which Schema Types Still Matter in 2026

Google's structured data gallery still lists a range of supported types. The right choice depends on what the page actually contains, not on which result looks most eye-catching. Markup should match the visible content and the real purpose of the page.

Breadcrumb markup deserves one extra note. Google's documentation changelog says breadcrumb markup appears only on desktop search results, not mobile. Google said breadcrumbs were being truncated on smaller screens, so businesses should not expect the same breadcrumb display across both device types.

FAQ is the clearest example of why old schema advice can become outdated. Google's changelog says FAQ rich results were first limited in September 2023 to well-known, authoritative government and health websites. Google then added a deprecation notice on 8 May 2026 stating that the FAQ rich result no longer appears in Google Search from 7 May 2026, and removed its FAQ rich result documentation in June 2026.

That means the old claim that FAQ schema can double the space your listing occupies is no longer true. FAQ content can still be useful for readers, and existing FAQ markup does no harm, but businesses should not expect it to change how their listing looks in Google Search.

How to Implement Structured Data Properly

For most small businesses, JSON-LD is the simplest format to brief a developer on because it can be added separately from the visible page content. WordPress SEO plugins and e-commerce platforms such as Shopify and WooCommerce can generate some structured data automatically, but the quality and completeness can vary, so it still needs checking.

1. Choose the structured data types that genuinely match the visible content on each page, such as LocalBusiness for an appropriate business page, Product for a product page or Article for editorial content.
2. Generate the JSON-LD and make sure it contains the required properties for the chosen type. Do not add properties that describe information users cannot see on the page.
3. Validate the markup with Google's Rich Results Test before deployment so you can identify missing required fields or technical errors.
4. Deploy the structured data to the live page, normally within a script tag in the head or body when using JSON-LD.
5. Use the URL Inspection tool in Google Search Console after deployment to check how Google sees the live page and continue monitoring relevant Search Console reports.

Google's structured data introduction specifically recommends the Rich Results Test for testing markup, followed by the URL Inspection tool in Search Console after the page is live. That sequence gives you a practical way to catch errors before release and then confirm what Google can access afterwards.

Common Structured Data Mistakes to Avoid

Structured data works best when it accurately reflects what the visitor can see. Trying to mark up extra claims, reviews or information simply because a schema field exists is the wrong approach.

• Adding markup for content that is not visible to readers on the page.
• Using a schema type that does not genuinely match the page's main content.
• Leaving out required properties and assuming partial markup will still qualify for enhanced display.
• Adding irrelevant or misleading information, including fake reviews.
• Relying entirely on a plugin or platform without checking the generated markup.
• Keeping outdated FAQ schema expectations and assuming FAQ markup will still produce an expanded search result.
• Adding review markup to your own business pages and expecting self-controlled reviews to qualify for review stars.
• Publishing structured data without running the Rich Results Test and checking the live page afterwards.

Google's general structured data guidelines say content marked up with structured data should be visible to readers and should not be irrelevant or misleading. That includes fake reviews. The safest approach is to treat structured data as a precise description of what is already on the page, not as a separate layer for adding claims that users cannot verify.

Be Careful with Review Stars

Review markup is one area where small businesses can easily develop the wrong expectation. Google Search Central's review snippet documentation says that if the entity being reviewed controls the reviews about itself, pages using LocalBusiness or other Organization structured data are ineligible for the star review feature.

Google's own example is a review about entity A placed on the website of entity A. In other words, adding review markup around testimonials or ratings on your own business site does not mean Google will show self-serving review stars for that business.

Google also says marked-up review content must be readily available to users on the page. That reinforces the wider rule that structured data should describe visible content rather than create a separate version of the page purely for search engines.

What Results Should a Business Expect

Structured data can make eligible pages easier for Google to interpret and can qualify them for supported rich results, but it should not be sold as a guaranteed traffic or ranking technique. Google's general guidelines explicitly say that correctly marked-up pages are not guaranteed to receive enhanced treatment in search results.

Google does publish case studies showing strong outcomes for some large publishers. On its structured data introduction page, Google says Rotten Tomatoes measured a 25 percent higher click-through rate on pages with structured data, The Food Network saw a 35 percent increase in visits after converting 80 percent of its pages, and Nestle measured an 82 percent higher click-through rate for pages that appeared as rich results.

Those are Google's published case studies of large publishers, not promises for a UK small business. They show that enhanced search presentation can matter in some cases, but they should not be turned into forecasts for your own website.

For location-based businesses, structured data works alongside a complete Google Business Profile and the wider steps in our local SEO guide; video publishers should also read our guide to video schema and key moments. Implementation and testing are included in our SEO service.

Frequently Asked Questions

Does Schema Markup Improve Rankings?

Structured data helps Google understand a page and can make that page eligible for supported rich results, but it is not a guarantee of higher positions. Google's general structured data guidelines also state that correctly implemented markup does not guarantee that a rich result will appear.

Is FAQ Schema Still Worth Adding in 2026?

FAQ content can still be useful for visitors, but FAQ markup should not be added with the expectation of gaining an expanded Google result. Google's documentation changelog says FAQ rich results stopped appearing in Google Search from 7 May 2026, and the related documentation was removed in June 2026. Existing FAQ markup does no harm, but it should not be expected to change how a listing appears.

Can I Add Star Ratings to My Own Business Website?

You can display genuine review content to visitors, but Google's review snippet guidance says pages using LocalBusiness or Organization structured data are ineligible for the star review feature when the reviewed entity controls the reviews about itself. Google also requires marked-up review content to be readily available on the page.

How Do I Test Structured Data?

Google Search Central recommends testing structured data with the Rich Results Test. After the markup has been deployed, use the URL Inspection tool in Google Search Console to inspect the live page. Remember that passing the test shows whether the markup meets relevant technical requirements, but Google's guidelines say it does not guarantee that an enhanced search result will appear.