Schema Markup: A Practical Guide for 2026
What schema markup does, which types are worth adding in 2026, and how to validate them.
Key takeaways
- 01Schema markup is structured data that describes a page's content to search engines and AI tools.
- 02JSON-LD is the format most sites use; it sits in a script tag and must match the visible page.
- 03Mark up only what the page contains, and retire types that no longer produce results.
- 04Validate markup after every template change, because one error can affect every page built from that template.
What schema markup is
Schema markup is a standard vocabulary, maintained at schema.org, that describes what a page is about: an organisation, an article, a product, a person, a service. Search engines and AI tools use it to understand the page. It does not guarantee a rich result or a citation.
Use JSON-LD
JSON-LD is the format most sites use. It sits in a script tag in the page head and describes the content in a structured way. Keep it in step with the visible page: a price, a date or a name in the markup must match what a visitor sees.
Choose the types that match the page
- Organization and WebSite: identity of the business and the site.
- Article or BlogPosting: dated, authored editorial content.
- Service: a service the business offers, with a clear description.
- BreadcrumbList: the path to the page, useful for navigation.
Do not add types the page does not support. Markup that describes content the visitor cannot see is a quality problem, and it can be ignored or treated as misleading.
Types that no longer produce results
Some types have been retired for Google results. HowTo rich results were deprecated in 2023, and FAQ rich results were retired in May 2026. Existing FAQ markup does not need to be removed for these reasons, but do not add new FAQ markup for a Google rich result.
Validate and monitor
- Run each template through a markup validator after every change.
- Check Search Console for enhancement reports on the types you use.
- Re-check after a platform upgrade or a theme change, because a single template error can spread to many pages.
How this fits with SEO and AEO
Schema markup supports clear content; it does not replace it. A page that answers the question directly, with accurate structure and a clear entity, is easier for both search engines and AI tools to use. Our llms.txt guide covers the AI side of the same question.
Frequently asked questions
Does schema markup improve rankings? It helps search engines understand a page, but it is not a ranking guarantee.
Which schema should a small business add first? Organization, WebSite and BreadcrumbList, then the type that matches the main page (for example Service or Article).
