Schema Markup Validator

Check any URL's JSON-LD structured data for syntax errors and missing recommended fields. Catch schema mistakes before they cost you rich results in Google Search.

Why use our Schema Markup Validator

Instant validation for any live URL

Enter a URL and see every JSON-LD block parsed and checked in seconds, no manual copy-pasting into a separate validator.

Free schema validator, no signup

Validate structured data online with no account required.

Catches syntax errors that break rich results

A single malformed JSON-LD block can silently invalidate your entire schema, this flags exactly where it breaks.

Flags missing recommended fields

Checks common types like Article, Product, and FAQPage against the fields Google actually looks for to show rich results.

Real Schema Markup Validator example: before vs. after

A recipe page's structured data, before and after fixing a missing field.

Before · Missing required field

Recipe schema missing recipeIngredient

Google's rich result eligibility check silently failed, the recipe card never appeared in search results.

After · Fixed

All recommended fields present

With the field added, the page became eligible for Google's recipe rich result card in search.

Frequently Asked Questions

What is JSON-LD structured data?

JSON-LD is a format for adding structured data to a webpage using the schema.org vocabulary, wrapped in a <script type="application/ld+json"> tag. Google uses it to understand page content and to show rich results in search.

What happens if my structured data has an error?

A syntax error in one JSON-LD block can invalidate that entire block, meaning Google ignores it completely. Missing recommended fields don't break validity, but they can disqualify the page from certain rich result types.

Does adding schema markup guarantee a rich result in Google?

No. Valid schema makes a page eligible, but Google still decides independently whether to actually display a rich result. Quality, relevance, and Google's own algorithms all factor in beyond just having valid markup.

Which schema types are worth adding first?

Start with whatever matches your actual content: Article for blog posts, Product for ecommerce pages, FAQPage for FAQ sections, LocalBusiness for local pages, and BreadcrumbList site-wide for better search result breadcrumbs.

Can a page have multiple JSON-LD blocks?

Yes, and it's common. A single page might have Organization, BreadcrumbList, and Article schema all present as separate blocks, this tool validates each one independently.

Also check your canonical tags and Open Graph tags to round out your technical SEO audit.

Catch technical SEO issues across your whole site

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