Free SEO checker
Free schema markup checker
A schema markup checker finds the structured data on a page, the JSON-LD and microdata that tell search engines what the page is about, and checks it. It reports every type it finds, blocks that fail to parse, and recommended properties that are missing, such as an Article without an author.
What this tool checks
- Every JSON-LD block and microdata item on the page
- JSON syntax errors that make a block unreadable
- Missing recommended properties for common types
- An Organization or LocalBusiness description
- BreadcrumbList on inner pages
Why it matters
Structured data helps search engines and AI systems understand who you are and what a page offers, and it unlocks rich results such as product prices and breadcrumbs. A single missing comma makes a whole block invisible.
How to fix what it finds
- Fix any block that fails to parse first; it is ignored entirely.
- Fill in the missing properties listed for each type.
- Describe your company with Organization JSON-LD on the home page.
- Add BreadcrumbList to inner pages.
Want this handled for you? RankMesh finds these issues across your whole site every week and ships the fixes after your approval. See how the platform works, pricing or start with the free AI visibility report.
Schema markup checker: common questions
No. Google's test confirms eligibility for specific rich results. This tool checks that your markup parses and is complete for common types. Use both when launching new markup.
Google recommends JSON-LD. It sits in one script block, is easier to maintain and does not tangle with your HTML.
No. Google retired HowTo rich results in 2023. Focus on Organization, Article, Product, BreadcrumbList and the types that match your pages.
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