Schema Checker
Check pasted JSON-LD for JSON syntax and selected context, type and property-presence hints. This is a limited local check, not full validation.
Check pasted JSON-LD for JSON syntax and selected context, type and property-presence hints. This is a limited local check, not full validation. The scope note below explains what needs separate review.
Schema Checker is a free Schema & Structured Data Tools utility that runs entirely in your browser — nothing you enter is uploaded.
How to use Schema Checker
- Paste the documented input format into the input field.
- Read the limited checks and any reported missing fields.
- Use a full implementation or the relevant consumer’s test for complete validation.
About this tool
Parses pasted JSON, or the first matching JSON-LD script block, and reports basic @context, @type and selected top-level property-presence hints. It follows arrays and @graph for those hints. It does not expand JSON-LD contexts, verify vocabulary terms or property values, inspect a live URL, or establish Google rich-result eligibility.
Everything Schema Checker does happens on your own device. Schema Checker assembles valid JSON-LD locally so you can paste it into your page.
Review the generated values before publication. JSON serialization alone does not establish vocabulary correctness or search-feature eligibility.
Frequently asked questions
How do I use Schema Checker?
Check pasted JSON-LD for JSON syntax and selected context, type and property-presence hints. This is a limited local check, not full validation.
Does Schema Checker cost anything?
No — Schema Checker is completely free, with no sign-up and no hidden limits.
Where is my data processed by Schema Checker?
Entirely in your browser — Schema Checker keeps your data on your own machine and sends nothing anywhere.
Does this tool fully validate Schema.org or search eligibility?
Parses pasted JSON, or the first matching JSON-LD script block, and reports basic @context, @type and selected top-level property-presence hints. It follows arrays and @graph for those hints. It does not expand JSON-LD contexts, verify vocabulary terms or property values, inspect a live URL, or establish Google rich-result eligibility.
Does Schema Checker work on mobile?
Yes — Schema Checker is just a web page and runs on any modern browser, including phones and tablets.