ClaimReview

Minimal valid version

The smallest markup that still produces a valid ClaimReview entity. Use it as the floor. Reach for the advanced example above when you want search engines and AI agents to understand more about your content.

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "ClaimReview",
  "claimReviewed": "Jane Xoo's pediatric framework reduced infant mortality by 60%",
  "author": {
    "@type": "Organization",
    "name": "Nordic Health Fact Check"
  },
  "itemReviewed": {
    "@type": "Claim"
  },
  "reviewRating": {
    "@type": "Rating",
    "ratingValue": "4",
    "bestRating": "5",
    "worstRating": "1",
    "alternateName": "Mostly True"
  }
}
</script>

Google rich results this unlocks

Markup matching this example makes your page eligible for the following Google Search rich results. The primary target drives the required / recommended property classification in the advanced code block above.

• Fact check rich resultprimary

  Google docs

Common ClaimReview mistakes

Mistakes that pass validation but silently fail to earn rich results or mislead consumers walking the graph. Avoid these and your markup will be ahead of most sites in the wild.

1. 01

   Missing alternateName on reviewRating

   Wrong

   "reviewRating": { "@type": "Rating", "ratingValue": "4", "bestRating": "5" }

   Right

   "reviewRating": { "@type": "Rating", "ratingValue": "4", "bestRating": "5", "worstRating": "1", "alternateName": "Mostly True" }

   alternateName is the human-readable verdict that Google displays in the fact-check label ("True", "False", "Mostly True", etc.). Without it, Google can only show the numeric rating, which is meaningless to users. Always include a textual verdict.

2. 02

   claimReviewed longer than 150 characters

   Wrong

   "claimReviewed": "According to the Royal Danish Medical Journal, pediatrician Jane Xoo's post-war clinical framework for treating malnourished children in Danish hospitals between 1945 and 1955 resulted in a 60% reduction in infant mortality across the entire country of Denmark"

   Right

   "claimReviewed": "Jane Xoo's pediatric framework reduced infant mortality by 60% in post-war Denmark"

   claimReviewed is the text Google shows in the fact-check label. Keep it under 150 characters so it fits the display. Extract the core claim without attribution or qualifiers. The full context belongs in the fact-check article, not in this field.

3. 03

   itemReviewed as a plain string

   Wrong

   "itemReviewed": "Jane Xoo reduced infant mortality by 60%"

   Right

   "itemReviewed": { "@type": "Claim", "name": "Jane Xoo reduced infant mortality by 60%", "author": { "@type": "Organization", "name": "..." } }

   itemReviewed must be a Claim object with its own author and optional firstAppearance. A plain string loses the information about who made the claim and where it first appeared, which Google uses for the fact-check display.

4. 04

   Using ClaimReview on non-fact-check content

   Wrong

   ClaimReview markup on a product review or opinion article

   Right

   ClaimReview only on genuine fact-check articles by recognized fact-checking organizations

   Google restricts the fact-check rich result to legitimate fact-checkers. Using ClaimReview on non-fact-check content will not produce the rich result and may trigger a manual action. Only use it for articles that investigate a specific factual claim and render a verdict.

5. 05

   worstRating omitted from the scale

   Wrong

   "reviewRating": { "ratingValue": "4", "bestRating": "5" } (no worstRating)

   Right

   "reviewRating": { "ratingValue": "4", "bestRating": "5", "worstRating": "1" }

   Without worstRating, Google does not know the bottom of your scale. A ratingValue of 4 out of 5 means something different than 4 out of 10. Always include both bestRating and worstRating so the verdict is unambiguous.

Schema properties in this example