Free Tool

Schema Checker

Detect structured data instantly. Find JSON-LD & Microdata on any page.

Enter a URL above to check for structured data

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About the Schema Markup Checker

Structured data (schema.org markup, usually written as JSON-LD) is extra code that explains your content to search engines in a machine-readable way — this is an article, this is its author, this is a product and its price. It is what makes rich results like star ratings, FAQs, and breadcrumbs possible.

This checker fetches any URL from our servers and extracts the structured data it finds — both JSON-LD and Microdata — then lists the schema types on the page so you can confirm the right markup is present and parsing cleanly.

How to use it

  1. Enter the full URL of the page you want to inspect, including https://.
  2. Press Check. We fetch the page and pull out every block of structured data.
  3. Review the detected schema types (Article, Product, FAQPage, Organization, and so on) and confirm they match the content actually on the page.
  4. If a type you expect is missing, add the markup; if a type is present but does not match the visible content, fix it before it causes problems.

Why it matters for SEO

  • Valid structured data makes a page eligible for rich results — stars, FAQs, prices, breadcrumbs — that take up more space and earn more clicks.
  • Search engines use schema to understand entities and relationships, which helps with topical relevance and eligibility for AI-generated answers.
  • Markup that does not match the visible page is a policy violation and can trigger a manual action that removes rich results — checking for mismatches protects you.
  • Seeing every type on the page in one place makes it easy to spot duplicate or conflicting blocks that dilute the signal.

Frequently asked questions

What is the difference between JSON-LD and Microdata?

Both express schema.org data. JSON-LD is a self-contained script block in the head and is the format Google recommends; Microdata is woven into the HTML tags themselves. This tool detects either.

Does structured data improve rankings directly?

It is not a direct ranking factor, but the rich results and improved entity understanding it enables can lift click-through rate and eligibility for enhanced search features — which move traffic.

Why must schema match the visible page?

Search engines require that structured data describes content the user can actually see. Marking up a rating or FAQ that is not on the page is considered misleading and can cost you all rich results via a manual action.

Is the schema markup checker free?

Yes — it is completely free with no sign-up. It reads the public HTML of any URL and reports the structured data it contains.

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