JSON-LD Validator | Structured Data Checker - SEOKit
Free JSON-LD validator. Validate structured data markup, check required fields, detect syntax errors, and verify Schema.org compliance for rich snippets.
What is JSON-LD Validator?
How to Use JSON-LD Validator
Paste your JSON-LD code into the text area. Click "Validate" to check for JSON syntax errors, missing @context or @type fields, required properties for common schema types (Article, Product, FAQ, LocalBusiness, Event, Recipe, etc.), and value format issues. The tool highlights errors and warnings with clear explanations and line numbers.
How JSON-LD Validator Works
Common Use Cases
- Validate JSON-LD before deploying to production
- Debug structured data errors from Google Search Console
- Check required fields for specific schema types
- Verify JSON syntax is well-formed before pasting into HTML
- Ensure structured data qualifies for rich snippet eligibility
Frequently Asked Questions
What is JSON-LD?▼
JSON-LD (JavaScript Object Notation for Linked Data) is a method of encoding linked data using JSON. It is the preferred format by Google for structured data markup on web pages, added via a <script type="application/ld+json"> tag.
What are the required fields in JSON-LD?▼
Every JSON-LD block must have @context (usually "https://schema.org") and @type (e.g., "Article", "Product"). Each schema type then has its own required and recommended properties, like "name", "description", "image", etc.
How do I fix JSON-LD syntax errors?▼
Common syntax errors include missing commas between properties, trailing commas after the last property, unquoted keys, single quotes instead of double quotes, and mismatched brackets. Use this validator to identify the exact error location.
Does valid JSON-LD guarantee rich snippets?▼
No. Valid structured data is necessary but not sufficient for rich snippets. Google may choose not to display rich results based on page quality, content relevance, or other algorithmic factors. Valid markup simply makes your page eligible.
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