Checks / Titles, headings and schema
Structured data does not parse
A JSON-LD block on the page is not valid JSON, so crawlers ignore it completely.
schema_invalid · Titles, headings and schema · Warning
What triggers it
A JSON-LD block on a page does not parse as JSON.
What to change
Fix the JSON syntax (a missing comma or quote) and validate it at validator.schema.org.
Example
HTML to put in the page:
<script type="application/ld+json">
{"@context":"https://schema.org","@type":"Organization","name":"Example Shop","url":"https://example.com"}
</script>How to confirm the fix
- Paste the URL into validator.schema.org: no JSON syntax errors
- Press 'Re-check 1 page'
How common it is
We have not measured how common this is on a sample of sites. Counts appear here when a study covers it.
About this check
| Check ID | schema_invalid |
|---|---|
| Report section | Titles, headings and schema |
| Severity | Warning |
| How it is decided | Measured: read directly from the page or the server's response. |
| Added | Version 3, 19 October 2026 |
| Status | Measured in every report |
| Report gives the code | No, the fix is described in words |
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