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Free Online Schema Markup Validator

Check local JSON-LD structure without implying search-engine approval.

Your input stays on this device. Processing is bounded; regex runs in a worker with a two-second timeout.

Result



How to use Schema Markup Validator
Check local JSON-LD structure without implying search-engine approval. This checks JSON syntax and basic JSON-LD shape. It is not comprehensive schema.org validation and does not establish Google eligibility or approval.
  1. Set Input.
  2. Run the tool, review the result and its stated limitations, then copy or download if needed.
Example & practical use
Check local JSON-LD structure without implying search-engine approval. The example below demonstrates Input.
Example input:
{
  "text": "{\"@context\":\"https://schema.org\",\"@type\":\"Organization\",\"name\":\"Example\"}"
}
Expected result (relevant fields):
{
  "valid": true
}
Features & result limitations
This checks JSON syntax and basic JSON-LD shape. It is not comprehensive schema.org validation and does not establish Google eligibility or approval.
Frequently asked questions
What inputs does Schema Markup Validator accept?
Input
How should I interpret the Schema Markup Validator result?
This checks JSON syntax and basic JSON-LD shape. It is not comprehensive schema.org validation and does not establish Google eligibility or approval.
Where does Schema Markup Validator process my data?
Inputs are processed locally in your browser. Submitted text is not sent to external services. A successful-run event increments an aggregate tool counter without your input.