Free OnlineSEO Tools
Structured Data Validator
Validate JSON-LD, Microdata, and RDFa structured data. Check schema markup for errors before deploying to production.
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Paste your JSON-LD structured data and click Validate to check for errors.
Key Features — Structured Data Validator
Validates JSON-LD, Microdata, and RDFa formats
Schema.org property validation
Required and recommended field checks
Rich result eligibility assessment
Detailed error descriptions with fix suggestions
Why Use This Tool — Structured Data Validator
Free Online Structured data validatorSchema validator — for EveryoneFast & Easy Json-ld validatorRich snippet tester — 100% FreeFree Online Schema markup checker
Privacy First
All processing happens in your browser. Your data never leaves your device.
Lightning Fast
Get instant results with zero wait time. No server delays, no loading screens.
Works Everywhere
Use on any device — desktop, tablet, or phone. No downloads or plugins needed.
Frequently Asked Questions — Structured Data Validator
What types of structured data can be validated?
The validator checks JSON-LD script blocks, Microdata HTML attributes, and RDFa annotations. It validates the syntax of each format and checks the properties against schema.org specifications to ensure they are correctly used.
How do I know if my markup qualifies for rich results?
The tool checks your markup against Google Rich Results requirements, which are stricter than the general schema.org specifications. It identifies which required properties are present and which recommended properties are missing, giving you a clear path to rich result eligibility.
What are common structured data errors?
Common errors include missing required properties like name or image, incorrect data types like using a string for a numeric value, invalid URLs in url properties, missing @context or @type declarations in JSON-LD, and deprecated schema types or properties.