JSON-LD Schema Validator

This free JSON-LD validator lets you paste any block of structured data and instantly catch the problems that break rich results before you ship them to a live page. It runs entirely in your browser, parses your markup, prettifies it, and flags missing properties that search engines expect for common schema types like LocalBusiness, Product, FAQPage, Review, Article, BreadcrumbList, and Service.

Most schema mistakes are quiet ones. A trailing comma, a mismatched bracket, or a forgotten required field will not throw an error in your CMS, but it can stop Google from showing your stars, prices, or business details. Using a json-ld validator before you deploy means you find the broken bracket or the missing name field at your desk instead of weeks later when you notice the rich snippet never appeared.

Structured data is one of the strongest signals you can give Google about your local business, and clean markup pairs naturally with strong Maps visibility. If you want to track how your business ranks across the local grid once your schema is solid, ProMapRanker can help, start free.

FAQ

What does a JSON-LD validator actually check?

This json-ld validator does two things. First it runs your pasted markup through a strict JSON parser to catch syntax errors like missing commas, unclosed brackets, and bad quotes, reporting the exact problem. Second it inspects the parsed object for an @context and @type, then compares your properties against a bundled list of fields that are commonly required for that type, warning you about anything missing.

Will this tool send my schema to a server?

No. Everything happens locally in your browser using plain JavaScript. Your JSON-LD is never uploaded, stored, or transmitted anywhere, so you can safely paste markup from staging sites or unpublished pages and still get a full parse result and warnings.

Does passing this validator guarantee a rich result?

It gives you a clean, error-free foundation, which is the hard part most people miss, but Google still decides whether to display a rich result based on content quality, eligibility, and its own rules. Use this tool to confirm your syntax is valid and your required properties are present, then confirm eligibility in Google's own Rich Results Test before launch.