How to use JSONschema Validator
- Paste the JSON you need to validate into the input box.
- Set JSON Schema, JSON data to validate so the output fits your use case.
- JSONschema Validator updates the output automatically as you type.
- Use Copy to keep or reuse the result.
About this tool
JSONschema Validator runs entirely in your browser. JSONschema Validator validates and reshapes your JSON locally with no server round-trip.
Clear error positions help you find a stray comma or bracket quickly. It behaves the same on desktop and mobile, with nothing stored remotely.
Frequently asked questions
How do I use JSONschema Validator?
JSONschema Validator lets you validate your input right in the browser using the JSON Schema, JSON data to validate controls, with the result shown instantly and nothing uploaded.
Is JSONschema Validator free to use?
Yes — JSONschema Validator is completely free, with no usage limits.
Where is my data processed by JSONschema Validator?
Entirely in your browser — JSONschema Validator keeps your data on your own machine and sends nothing anywhere.
Can JSONschema Validator handle large or deeply nested JSON?
Yes. JSONschema Validator parses JSON entirely in your browser, so large or nested documents stay on your device and never upload.
Can I use JSONschema Validator without a connection?
Yes — after the first load JSONschema Validator runs entirely offline.