SEO / THE EVERYDAY TOOLKIT
JSON-LD Structured Data Checker.
Check JSON-LD syntax, contexts and graph entity types locally. This is a free utility from my portfolio toolkit, with local browser processing and no account required.
Basic JSON and graph inspection only. This does not validate all Schema.org properties or Google rich-result eligibility. No remote context or page is fetched.
SIMPLE BY DESIGN
How to use JSON-LD Structured Data Checker
- Copy the JSON inside your application/ld+json script.
- Run the local check and inspect errors, warnings and entity types.
- Compare each claim with visible page content, then use an official validator.
Inspect a structured data draft before publishing.
A JSON-LD block is ordinary JSON describing entities on a page. Paste its object or graph without the script wrapper to catch syntax problems and inspect declared entity types. This basic checker examines root contexts, graph shape and type strings. It does not know every schema vocabulary rule, compare the markup with visible content or establish Google feature eligibility. Finish with the Schema Markup Validator and the relevant Google feature test.
A FEW THINGS TO KNOW
A little more clarity.
Does a passed check guarantee rich results?
No. It establishes only the basic checks listed in the output. Search engines have additional content, feature and quality requirements.
Is my input sent to a server?
No. This utility processes your input in your browser. URLs you paste are treated as data; the tool does not fetch them. Be careful with clipboard history on shared devices.
FROM THE JOURNAL
Debug JSON-LD: Syntax, Entity Meaning and Visible Content
Use a layered structured data review that separates parse errors, graph mistakes, visible evidence and rich-result requirements.