Why validate structured-data syntax?
JSON-LD lets a page describe entities and relationships in a machine-readable format. A missing quote or trailing comma can make the JSON unparsable, so checking syntax is a useful step before deployment. This tool reports whether the input parses and lists any @type declarations it finds.
Syntax is only the first validation layer
Valid JSON does not mean the vocabulary is correct, the properties are appropriate, the data matches visible page content, or a rich result will appear. Search features have their own eligibility rules, which change over time and may depend on page quality, policy compliance and other signals. Do not add review ratings, prices, FAQs or business facts that are not genuinely visible and accurate.
A responsible structured-data workflow
- Choose a Schema.org type that accurately describes the page.
- Keep structured facts consistent with visible content and canonical URLs.
- Check syntax, then use the relevant official search-engine test.
- Review Search Console enhancement reports where available and monitor changes after deployment.
Frequently asked questions
Does valid JSON-LD guarantee a Google rich result?
No. Syntax is one requirement, not a guarantee. Google decides eligibility and display based on supported types, page content, policies and other signals.
Can I paste a full HTML page?
Yes. If it includes a script with type application/ld+json, this tool attempts to parse the first such script. You can also paste a JSON object directly.
Does this validate every Schema.org property?
No. It checks JSON syntax and summarizes declared types only. Use an authoritative validator for vocabulary and search-feature requirements.