Local developer utility

JSON Schema Validator

Validate JSON against a draft 7, 2019-09 or 2020-12 schema with field-level errors. Your input stays in your browser while you work.

JSON Schema Validator🔒 Processed locally

How to use JSON Schema Validator

Complete the labeled fields above, choose an action, and inspect the result before copying or downloading it.

Processing runs locally in this browser. No input is uploaded or sent to a conversion service.

Local references only; remote schemas are never fetched. Validation does not change your data.

JSON Schema Generator — Infer a draft 2020-12 JSON Schema from a sample value.
JSON Diff — Compare two JSON or JSON5 documents and see structural changes clearly.
JSON to Zod — Generate typed models from sample JSON, including nested objects and arrays.
JSON Stringify — Encode JSON as a quoted JSON string.