Online Schema Validator
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.
Online Schema Validator is a free Schema & Structured Data Tools utility that runs entirely in your browser — nothing you enter is uploaded.
How to use Online Schema Validator
- 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.
There is no server behind Online Schema Validator. Online Schema Validator assembles valid JSON-LD locally so you can paste it into your page.
Everything is generated on your device with nothing uploaded. Your input never leaves the page, and no account or install is required.
Frequently asked questions
What does Online Schema Validator do?
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 Online Schema Validator cost anything?
No — Online Schema Validator is completely free, with no sign-up and no hidden limits.
Is my input private in Online Schema Validator?
Yes — your input never leaves your device; Online Schema Validator does all the work in your browser.
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 Online Schema Validator work offline?
Once the page has loaded, Online Schema Validator keeps working with no network connection.