JSON Schema Validator
Validate JSON data against a JSON Schema (ajv). Everything runs on your device — nothing is sent to a server.
The result will appear here…
or press Ctrl+Enter
Everything runs in your browser. Your data is never sent to our servers.
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Example
Example Input
{"age":"thirty"} (schema requires integer)Example Output
✗ INVALID — /age must be integer
How to Use
- 1Paste your data into the Input field.
- 2If the tool has "More settings" (mode, query, columns, etc.), set them as needed.
- 3Click the button (or press Ctrl+Enter) to process.
- 4Copy the result with the Copy button.
About JSON Schema Validator
JSON Schema Validator checks whether a JSON document conforms to a schema you provide — correct types, required fields present, constraints met. Essential for API and config validation.
Paste the JSON data in the Input and the JSON Schema in "More settings". If valid, it shows VALID; if not, each violation is explained with its location.
It uses ajv, the fastest and most standards-compliant JSON Schema validator. Everything runs in the browser.
FAQ
Is my data sent to a server?
No. JSON Schema Validator runs entirely in your browser using client-side libraries. Your data never leaves your device.