Free Schema Markup
Validator
Test JSON-LD, Microdata, and RDFa structured data on any URL. See exactly what schema types Google's crawler detects on your page — in seconds.
Frequently asked questions
What is schema markup?
Schema markup is structured data (JSON-LD, Microdata, or RDFa) that you add to your HTML to help search engines like Google understand what your page is about. It can unlock rich results — star ratings, FAQs, product info, recipe cards — in search engine results pages.
Is this schema validator really free?
Yes, 100% free. No signup, no credit card, no rate limit on this page. Test as many URLs as you want.
What does the validator check?
It checks every JSON-LD block on the page for valid JSON syntax, lists all detected schema types (Article, Product, Organization, etc.), counts Microdata itemscope elements, and detects RDFa vocab usage. You'll see the raw structured data for each block so you can review it directly.
Why did Google deprecate the Schema.org validator?
Google's focus shifted to its Rich Results Test, which only validates schema eligible for Google's specific rich-result features. The community-run validator.schema.org remains the canonical reference. This tool gives you a faster, cleaner middle ground — see what's on the page, what's valid, and what's broken at a glance.
What's the difference between this and the full MetricVault platform?
This page is one tool. The full MetricVault AI dashboard has 30+ tools including AI Visibility tracking (ChatGPT, Gemini, Perplexity citations), Domain Overview, Backlink Profile, Keyword Magic, and more. You can sign up free for 9 more free SEO tools plus 5 premium reports a month — no credit card required.