Tool Guide

JSON-LD Common Errors

Most JSON-LD problems are simple: invalid JSON or missing core keys. This explains the frequent errors and the honest fixes.

Frequent errors

  • Trailing commas or unescaped quotes → invalid JSON, silently dropped.
  • Missing @context or @type.
  • Multiple unrelated objects without @graph.
  • Fabricated aggregateRating/offers.

Fixes

  • Validate the JSON first.
  • Always include @context (https://schema.org) and a specific @type.
  • Use @graph for multiple related entities.
  • Never invent ratings, reviews, or pricing.

Verify

Paste your block into the JSON-LD Validator (simplified — not official Google validation). Background: how to structure JSON-LD.

FAQ

Is this official validation?

No. It is a simplified syntax/structure checker; use Google's own tools for rich-result eligibility.

Does it upload my markup?

No. Parsing is entirely in your browser with JSON.parse.

Related guides

Structure JSON-LDFull guide Technical SEO checklistContext

Related tool

JSON-LD ValidatorFree, browser-only — no upload

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