Structured Data Checker

A structured data checker reads the JSON-LD blocks in a page, parses them and reports the types found plus syntax errors and missing recommended properties. Use Google's Rich Results Test for final eligibility.

This tool fetches the address you enter once, from our server, and reports what a crawler would receive. The URL is not stored; only a short-lived rate-limit counter is kept. Results show the page at the moment of the check and can differ from what a logged-in browser or a bot with different headers sees.

How to read the result and act on it

Check that the types found match what the page is: Article or BlogPosting for posts, Product for product pages, Organization for the company, BreadcrumbList for navigation. Fix any syntax errors first, since a single stray comma makes a block unreadable. Then add missing recommended properties where you have accurate data, such as author, datePublished, image or offers. Make sure every value in the markup is visible and true on the page itself. When the output looks clean, validate with Google's Rich Results Test to see whether the page is eligible for a specific feature, and use the Schema.org validator for general syntax. Monitor enhancements reports in Search Console after release.

Common mistakes to avoid

Common mistakes include marking up content that is not on the page, such as reviews the visitor cannot see, which breaks Google's guidelines and can lead to manual actions. Duplicate blocks from a theme and a plugin often describe the same entity twice with conflicting values. Using the wrong type, for example Product on a service page, or leaving placeholder text in fields are other issues. Relative URLs in image or url fields can also fail. Remember that this tool reads JSON-LD only, so Microdata or RDFa will not appear here. Markup that validates still gives no guarantee of a rich result, so treat it as a clarity signal.

Which structured data does Google still use?

Product, Article, Organization, LocalBusiness, Event, Video, Breadcrumb and others. FAQ rich results are limited and HowTo was retired.

Does structured data guarantee rich results?

No. It makes a page eligible. Google decides whether to show a rich result.

Does structured data help AI search?

It gives machines an unambiguous summary of entities on the page, which can help understanding, but no AI system has promised to use it for citation.

How do I test if my schema markup is valid?

Paste the URL into a structured data checker for a quick syntax review, then use Google's Rich Results Test for eligibility and the Schema.org validator for general validity. Fix errors first and warnings where you have the data.

Where should JSON-LD be placed on a page?

JSON-LD can sit in the head or the body inside a script tag with type application/ld+json. Google reads either location. Place it in the initial HTML where possible so crawlers do not depend on JavaScript to see it.

• JSON-LD Validator: Paste JSON-LD or page source to check syntax, @context and common required properties.
• Schema Markup Generator: Generate JSON-LD structured data for articles, products, FAQs and more.
• FAQ Schema Generator: Generate FAQPage JSON-LD from question and answer pairs.

Browse all 41 free technical seo tools, or see the full free SEO toolbox. If you would rather have this handled for you, take a look at our technical SEO services and the results from real projects.