Validate Schema Markup
Structure
Validate Your Schema Markup Before Deploying
Catch errors in your JSON-LD structured data before search engines encounter them
Invalid schema markup can prevent your pages from qualifying for rich results in Google Search. Our validator checks your JSON-LD for syntax errors, missing required properties, and common mistakes — all in your browser, no data sent anywhere.
Features
JSON Syntax Check
Validates proper JSON formatting, brackets, quotes, and escaping.
Context Validation
Verifies the @context and @type properties are correctly set.
Property Check
Checks for common required properties based on the schema type.
Client-Side
All validation runs in your browser — your data stays private.
Common Mistakes
- Missing or incorrect @context (should be 'https://schema.org').
- Using wrong @type values (case-sensitive, must match schema.org).
- Invalid JSON syntax — missing commas, brackets, or quotes.
- Using relative URLs instead of absolute URLs for image and URL properties.
- Missing required properties (e.g., 'name' for Product, 'headline' for Article).
- Duplicate script tags with conflicting schema types.
Frequently Asked Questions
What errors should I fix first?
Fix JSON syntax errors first (invalid JSON won't be parsed at all), then @context/@type issues, then missing required properties.
How do I test with Google?
After fixing errors here, test with Google's Rich Results Test at search.google.com/test/rich-results to see if your markup qualifies for enhanced search results.
Is this the same as Google's tool?
Our tool focuses on JSON-LD syntax and structure validation. Google's Rich Results Test additionally checks if your markup qualifies for specific rich result types.