Schema.org Validator – Free JSON-LD Structured Data Testing Tool

🌐 Validate From URL

URL

Structured data (Schema.org) is one of the most important parts of technical SEO.
Correctly implemented JSON-LD helps search engines better understand your content and makes your site eligible for rich results such as star ratings, FAQs, product snippets, and more.

However, a small mistake in JSON-LD can break your structured data. That’s why we created the Schema.org Validator – a free server-side tool to check and validate your schema markup.

Why Validate Schema Markup?

Detect Errors Before They Hurt SEO

Even a missing @type or invalid JSON format can make Google ignore your markup.

Ensure Rich Results Eligibility

Only valid JSON-LD ensures your pages qualify for Google’s rich results.

Faster Debugging

Instead of guessing what’s wrong, our validator highlights missing fields, invalid contexts, or structural issues.

Features of Schema.org Validator

  • ✅ Validate JSON-LD code – Paste your structured data directly and test instantly.

  • 🌐 Validate from URL – Fetch a webpage and check all <script type="application/ld+json"> blocks.

  • 🔍 Error detection – Identify missing required fields, invalid @context, or malformed JSON.

  • 📊 Detailed report – Shows each block’s type, status (OK or Issues), and warnings.

  • 📂 Raw JSON view – Inspect the original JSON-LD block for further debugging.

Example: Testing an Article Schema

Suppose you paste this JSON-LD:

{
  "@context": "https://schema.org",
  "@type": "Article",
  "headline": "How to Improve SEO in 2025",
  "datePublished": "2025-01-10"
}

The Schema.org Validator will return:

  • ✅ @context valid (https://schema.org)

  • ✅ @type detected (Article)

  • ⚠️ Missing optional fields like author or image

This allows you to fix the schema before deploying it live.

When Should You Use Schema.org Validator?

  • Before publishing → test new structured data snippets.

  • After a site update → ensure schema markup wasn’t broken.

  • SEO audits → check competitor sites or client websites.

  • Continuous monitoring → keep your structured data error-free.

How to Use

  1. Paste JSON-LD into the left panel and click Validate JSON.

  2. Enter a URL into the right panel to check live schema from that page.

  3. Review the validation results, including issues, warnings, and block details.

  4. Fix errors and revalidate until all blocks show OK.

Conclusion

The Schema.org Validator is an essential tool for SEO professionals, developers, and content managers.
It helps you:

  • Detect and fix errors in structured data.

  • Ensure eligibility for Google’s rich results.

  • Optimize your website’s visibility in search results.

👉 Try the Schema.org Validator today and make sure your JSON-LD structured data is valid, error-free, and SEO-ready.