Structured Data Tester | JSON-LD Validator - SEOKit
Free structured data testing tool. Validate JSON-LD and Schema.org markup. Check for errors and preview rich snippet eligibility for Google search.
What is Structured Data Tester?
How to Use Structured Data Tester
Paste your JSON-LD structured data code into the text area. Click "Validate" to analyze the markup. The tool checks for valid JSON syntax, correct Schema.org types and properties, required fields for each schema type, and provides warnings for recommended but missing properties.
How Structured Data Tester Works
Common Use Cases
- Validate JSON-LD before adding it to your website
- Debug structured data errors flagged by Google Search Console
- Check if your markup qualifies for rich snippets
- Verify required properties are present for each schema type
- Test structured data for articles, products, FAQs, and events
Frequently Asked Questions
What is JSON-LD?▼
JSON-LD (JavaScript Object Notation for Linked Data) is the recommended format by Google for structured data markup. It uses a <script type="application/ld+json"> tag in your HTML to provide machine-readable data about your page content.
What schema types support rich snippets?▼
Google supports rich results for many schema types including Article, Product, FAQ, HowTo, Recipe, Event, LocalBusiness, Review, BreadcrumbList, VideoObject, and more. Each type has specific required and recommended properties.
How do I add structured data to my website?▼
Add a <script type="application/ld+json"> tag in your HTML <head> or <body> section containing your JSON-LD markup. Most CMS platforms also have plugins that can generate structured data automatically.
Why is my structured data not showing rich snippets?▼
Rich snippets are not guaranteed even with valid structured data. Google may not show them if the markup has errors, required fields are missing, the page quality is low, or Google simply chooses not to display them for that query.
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