Free tool
Structured Data (Schema Markup) Checker
Structured data is what turns a plain blue link into a rich result with stars, FAQs and breadcrumbs. This checker detects the JSON-LD on your page, lists the schema types found, and flags blocks with invalid JSON.
Free · No signup · Results in ~10 seconds
Why structured data pays
Rich results occupy more space in the results page and attract substantially more clicks at the same ranking position. It is one of very few SEO changes with a direct, visible payoff.
Invalid JSON is silently ignored
A single trailing comma makes an entire JSON-LD block invalid, and Google discards it without warning. Our checker parses every block and tells you which ones fail.
Which types to use
Organization on your homepage, Article on blog posts, Product with price and availability on shop pages, FAQPage for question sections, and BreadcrumbList site-wide.
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Related guides
Run the full 35-point audit.
Free · No signup · Results in ~10 seconds