Structured Data Tester
Paste JSON-LD markup to validate syntax and check required Schema.org fields for common types.
Validate JSON-LD before you publish
Structured data helps search engines understand your pages. JSON-LD is the format Google recommends, but a single missing property can block rich results. Paste your script block here to check JSON syntax and common Schema.org requirements for articles, products, FAQ pages, and more.
Related SEO tools
Build markup with the Schema Markup Generator, audit pages with the Sitemap Generator, and review robots rules with the Robots.txt Generator.
Frequently Asked Questions
Which schema types are supported?
The checker includes Article, Product, FAQPage, HowTo, LocalBusiness, Organization, Person, Event, Recipe, and WebSite with required and recommended field lists.
Does this replace Google Rich Results Test?
No. This is a fast local sanity check. Google may still apply additional policies when indexing live URLs.
Can I validate @graph blocks?
Yes. The tool walks nested nodes and validates each object that declares an @type.
Is my JSON uploaded?
No. Parsing and validation happen in your browser.
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