Free Schema Validation Checker: Find Structured Data Errors Fast

Paste your URL and get a full report on your structured data. See which schema types are present, what is broken, and how to fix it, all in seconds.

Try:

Free with a Brainito account. No credit card required.

example.com/product

Example

3 JSON-LD blocks · 1 missing property

  • Organizationname, url present
  • ProductMissing: offers
  • BreadcrumbListValid
  • JSON syntaxAll blocks parse

Example result with sample data. Yours uses live data for your inputs.

How it works

From your input to a prioritised list of fixes in under a minute.

  1. Step 1

    Enter your details

    Your website, business or the item you want checked. Nothing to install.

  2. Step 2

    We run live checks

    Brainito fetches live data and tests it against the rules that matter.

  3. Step 3

    Fix what matters first

    Clear results with what to fix, in order of impact, and where to go next.

What you get

What the result tells you, and why it is worth the minute it takes.

  • Catch Schema Errors Early

    Spot missing fields, invalid values, and broken JSON-LD before they cost you rich results in Google search.

  • Clear Fixes, Not Jargon

    Every issue comes with a plain-language recommendation so you know exactly what to change and why it matters.

  • Win More Rich Results

    Valid structured data helps Google show stars, FAQs, and other rich snippets that lift your click-through rate.

The guide

What the schema validation checker does, how to use it, and what to do with the result.

A schema validator checks the structured data on a page so search engines can read it. Enter a URL and the validator finds every JSON-LD block, lists the schema types it declares, flags blocks that are not valid JSON, and checks the required properties for the most common types, so you can fix problems before they cost you rich results.

What the Validator Checks

It reads every JSON-LD script on the page and reports each schema type it finds. Blocks that fail to parse are flagged, since a single broken bracket hides the whole block from search engines. For Organization, LocalBusiness, Product, Article, BlogPosting, FAQPage, BreadcrumbList, WebSite, Review and Event, it checks that the required properties are present and lists any that are missing.

Fixing Missing Properties

Each missing property tells you what to add: a Product without offers, an Article without a datePublished, a LocalBusiness without an address. Add the property to the JSON-LD with accurate values that match what the page shows, then re-run the check.

Valid Schema vs Rich Results

Valid structured data makes your content understandable; it does not guarantee rich results in Google. Eligibility also depends on content quality and Google's guidelines for each feature. After fixing errors here, use Google's Rich Results Test to see which rich results a page qualifies for.

Common Schema Mistakes

The usual problems are invalid JSON from a stray comma, schema that describes content not visible on the page, outdated or wrong values such as old prices, and several conflicting blocks for the same thing. Keep one clear block per entity and make sure it matches the page.

Schema for AI Search

AI assistants and AI Overviews also read structured data to understand who you are and what a page covers. Accurate Organization, LocalBusiness, Product and FAQPage markup makes it easier for them to describe and cite you correctly.

Frequently asked questions

Something else? Email support@brainito.com

How do I validate schema markup?

Enter the page URL. The validator finds each JSON-LD block, lists the schema types, flags invalid JSON and checks required properties for common types such as Product, Article, LocalBusiness and FAQPage.

Does valid schema guarantee rich results?

No. Valid schema makes your content understandable, but rich results also depend on Google's guidelines and content quality. Use Google's Rich Results Test to check eligibility.

What does the Schema Validation Checker actually check?

It fetches your page, reads the structured data markup it finds, and flags errors, warnings, and missing properties. You get a list of findings with clear recommendations for each one.

Is the Schema Validation Checker free to use?

Yes. The tool is free after creating a Brainito account. Once you sign up, you can run checks on any URL and review the full findings and recommendations at no cost.

Why does schema markup matter for SEO in 2026?

Search engines use structured data to understand your content and to power rich results like reviews, FAQs, and product listings. Broken or missing markup means you can miss those enhanced listings even when your page ranks well.

Where to go from here

The schema validation checker answers one question. These are the next ones worth asking.

  1. Step 1Schema Markup GeneratorGenerate the missing schemaOpen
  2. Step 2AI Knowledge Graph CheckerCheck how AI understands your brandOpen
  3. Step 3AI SEOGet quoted by ChatGPT, Perplexity and GeminiOpen

This tool checks one thing. An audit checks 77.

Want it fixed and tracked? See the SEO Suite

Run a full SEO audit

Guides on this topic

Get your schema report in seconds, with clear fixes for every issue

One account unlocks the schema validation checker plus 320+ marketing tools, weekly audits and your action plan.

  • Free with a Brainito account
  • No credit card required