SuperSEOPlus

Development Tools

JSON-LD Validator

Structured data fails quietly: one trailing comma or a missing property and a rich result never appears. Paste JSON-LD, or the full HTML of a page, and the tool finds every JSON-LD block, reports syntax errors with line and column, and checks common schema.org types against the property lists in Google's documentation. Everything runs in your browser.

How to use it

  1. Paste your JSON-LD, or the HTML of the page.
  2. Press Validate.
  3. Fix the errors first, then the warnings, and confirm the result with Google's Rich Results Test.

Example

A FAQPage whose Question has no acceptedAnswer is reported as an error at the exact path, for example $.mainEntity[0].

Questions

Is this the same as Google's Rich Results Test?

No. It checks syntax and the documented properties for common types. Google decides eligibility, so use its tool for the final answer.

Which types are checked?

Article, NewsArticle, BlogPosting, Product, Offer, FAQPage, Question, Answer, BreadcrumbList, Organization, LocalBusiness, Event, Recipe, VideoObject, WebSite, Person and JobPosting. Other types get a syntax check only.

Does it read Microdata or RDFa?

No, only JSON-LD.

Get practical SEO tips by email

Occasional emails with new guides and tools. Confirm by email first; unsubscribe in one click.