Meta & OpenGraph Checker
Inspect title, description, OpenGraph, Twitter Card and key head metadata.
SEO
Free Schema / JSON-LD Checker
Extract JSON-LD blocks, count valid and invalid JSON and list Schema.org @type values found on a page.
Your input is processed only as required by this tool.
Free Schema / JSON-LD Checker
JSON-LD is a common way to publish structured data for search engines and other consumers. This checker extracts bounded application/ld+json blocks from the public HTML, parses each block as JSON and recursively lists discovered @type values.
How to use it
- Enter the public page you want to inspect.
- Run the check and review the metadata extracted from the fetched HTML head.
- Compare the result with the page's intended search or social behavior before changing production markup.
How to read the result
Valid JSON is the first requirement, but syntactic validity does not prove that a schema matches a search engine's feature requirements or the visible page content. Review the detected types against the relevant documentation for your use case.
Limitations
The checker validates JSON syntax and extracts types; it is not a replacement for feature-specific eligibility testing and does not evaluate every Schema.org property constraint or search engine policy.
Frequently asked questions
Does valid JSON-LD guarantee a rich result?
No. Rich results depend on supported schema types, required properties, page content, policies and search engine decisions.
Can a page have multiple JSON-LD blocks?
Yes. The checker counts and parses multiple bounded JSON-LD blocks independently.