Structured Data Validator

Paste JSON-LD markup to validate against schema.org. Real-time error checking, no signup required.

JSON-LD Code

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Paste your JSON-LD structured data on the left to see validation results here.

Paste JSON-LD to see syntax-highlighted code.

AI Search Insights for Structured Data

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Structured data boosts AI citations

AI search engines like Perplexity and Google AI Overview rely heavily on structured data to understand page content. Pages with valid JSON-LD are more likely to be cited because the AI can confidently extract facts like product prices, article dates, and FAQ answers.

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FAQPage schema drives AI answer boxes

FAQ structured data is one of the most powerful schema types for AI visibility. When an AI engine encounters a question that matches your FAQ markup, it can pull your answer directly into its response with proper attribution. Make sure each question-answer pair is complete and self-contained.

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Use https in @context, always

A common mistake is using "http://schema.org" instead of "https://schema.org" in your @context. While both technically work, Google recommends https and some validators flag http as an issue. Consistency matters for both traditional and AI search engines.

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Nest author and publisher correctly

AI engines use author and publisher fields to establish content authority. Don't just use a plain string for author -- use a nested object with @type "Person" or "Organization" and include a name. This helps AI engines attribute your content correctly when building citations.

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What this structured data validator does

Paste your JSON-LD or a URL, and this free tool checks your structured data for errors — invalid syntax, missing required fields, and the wrong type — so you catch problems before they cost you a rich result.

What it checks for

Valid syntax: the JSON-LD parses correctly, with no trailing commas or broken brackets.
Required properties: each schema type needs certain fields (a Product needs a name; an Offer needs a price) — missing ones disqualify the block.
Correct type: the @type matches what the page actually is.
Consistency: the markup describes content that's genuinely on the page.

Frequently asked questions

What is structured data validation?

It's checking that your schema markup is syntactically valid and complete — correct JSON-LD, the right type, and all required properties present — so search engines can use it for rich results.

Why is my structured data not showing a rich result?

Common reasons: a missing required property, invalid JSON syntax, the wrong schema type, or markup that doesn't match visible content. This validator flags the first three; always keep the markup truthful to the page.

How do I validate a page's structured data?

Paste the page's JSON-LD, or enter the URL, and this tool parses the structured data and reports errors and missing fields. Fix those, then re-check.

Is this structured data validator free?

Yes, it's free, needs no sign-up, and runs in your browser.

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