Structured Data Validator and Schema Checker
Validate your JSON-LD, Microdata, and Schema markup with our free structured data validator. Identify syntax errors and optimize rich snippets instantly.
About Structured Data Validator
The Structured Data Validator analyzes your website's Schema markup to ensure search engines can properly read and parse your structured content. It inspects JSON-LD, Microdata, and RDFa formats directly in your browser, highlighting syntax issues, missing required properties, and formatting errors.
Built for web developers, technical SEOs, and content managers, this tool runs entirely on your device with no installation or account required. Paste your code snippet or HTML to inspect your markup and fix issues before deployment.
Key features
- Validates JSON-LD, Microdata, and RDFa formats
- Detects missing required Schema.org properties
- Pinpoints line-by-line syntax errors and warnings
- Runs locally in your browser for data privacy
- Supports direct code snippet and raw HTML testing
- Inspects nested entity hierarchies and object types
How to use Structured Data Validator
- Paste your structured data snippet or full HTML document.
- Select your markup type or allow automatic format detection.
- Click the validate button to analyze the schema.
- Review detected entities, schema errors, and recommendation warnings.
- Correct indicated errors in your code and re-test.
Who is it for?
- SEOs auditing client websites for rich snippet eligibility
- Developers testing Article, Product, or FAQ markup before launch
- E-commerce managers verifying Product and Offer schema syntax
- Content publishers ensuring correct BreadcrumbList and Organization data
Frequently asked questions
What is structured data validation?
Structured data validation is the process of checking your website's schema code against Schema.org standards. It ensures search engine crawlers can interpret the data correctly to generate enhanced search listings.
Which structured data formats are supported?
The validator supports all standard web formats, including JSON-LD, Microdata, and RDFa. JSON-LD is the format recommended by Google and most major search engines.
Does this tool check for Google rich results eligibility?
Yes, it evaluates your schema against standard specifications and highlights missing required and recommended fields necessary for rich search snippets.
Is this structured data validator free to use?
Yes, the tool is completely free with no usage limits, registration, or software installation required.
Is my code private when using this tool?
Yes, the validation executes client-side directly within your browser. Your code snippets and HTML are not uploaded or saved to external servers.