Pre-check JSON-LD structured data before publishing: valid JSON, a schema.org @context, @type on every node, and the properties rich results commonly require for FAQ, HowTo, Article, Product, and more.
Schema validator
Sanity-check JSON-LD structured data before you publish: JSON syntax, @context, @type, and commonly required properties for FAQ, HowTo, Article, Product, and other rich-result types. Paste bare JSON or a whole <script type="application/ld+json"> block.
This is a structural pre-check, not a guarantee of rich results. Before shipping important markup, confirm with Google's Rich Results Test, which applies Google’s full (and changing) requirements.
How to use Schema validator
- Paste your JSON-LD—bare JSON or the whole <script type="application/ld+json"> block.
- Click validate to see errors, warnings, and passing checks per node.
- Fix warnings about missing properties, then re-test important markup in Google’s Rich Results Test.
Example: A FAQPage missing mainEntity, or a Product offer without priceCurrency, gets flagged.
Frequently asked questions
- Is this the same as Google’s Rich Results Test?
- No. This is a fast structural pre-check that runs in your browser. Google’s test applies its full, evolving eligibility rules—use it as the final gate for markup that matters.
- What is the difference between an error and a warning here?
- Errors break the markup entirely (invalid JSON, missing @type or @context). Warnings flag missing properties that rich results usually expect—the markup is valid, but Google may ignore it.
- Does it support @graph?
- Yes. If your JSON-LD wraps multiple nodes in an @graph array, each node is checked individually.