Structured Data Validity Check
Verify that every detected JSON-LD block parses successfully and exposes readable schema types.
Check your websiteWhy this check matters
Malformed JSON-LD prevents machines from understanding otherwise useful entity and page information. A single broken block can also make template-level schema difficult to trust.
Passing evidence
{ "@context": "https://schema.org", "@type": "Organization", "name": "Example" }Common failing evidence
{ "@type": "Organization", "name": "Example", }Possible false positives
- Valid JSON-LD can still use an inappropriate schema type.
- Search-engine enhancement requirements are stricter than JSON parsing alone.
How to fix it safely
- Serialize JSON-LD with a real JSON encoder.
- Remove trailing commas, comments, and unescaped values.
- Validate generated markup for every template variation.
How to verify the fix
- Parse every rendered application/ld+json block.
- Run the canonical page through the relevant structured-data validator.
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