Dev tools

JSON Schema Validator

Validate JSON data against a JSON Schema with detailed error reporting.

JSON Data

{
  "name": "Rahul Sharma",
  "age": "twenty-five",
  "email": "rahul@example.com"
}

JSON Schema

{
  "type": "object",
  "required": ["name", "age", "email"],
  "properties": {
    "name": { "type": "string", "minLength": 2 },
    "age": { "type": "number", "minimum": 0 },
    "email": { "type": "string", "format": "email" }
  }
}

Results

Start typing to validate automatically, or click Validate.

About the JSON Schema Validator

The JSON Schema Validator checks a JSON document against a JSON Schema and reports detailed, location-aware errors whenever the data does not conform. It supports the common drafts — 4, 6, 7 and 2020-12 — along with format validation, so you can enforce the structure of your data precisely rather than relying on ad-hoc checks.

Developers use it to confirm that API payloads and configuration files match an agreed contract before shipping, catching missing required fields, wrong types and malformed values early. Clear, specific error messages make it quick to see exactly what failed and where, which shortens the loop between writing a schema and trusting it.

Validation runs entirely in your browser, so neither your data nor your schema is uploaded to a server. There is no install and no account, which makes it a private, dependable check to run during development whenever you need to be sure a document is well-formed.

Frequently asked questions

What is a JSON Schema?

A JSON Schema describes the structure and validation rules for JSON data — similar to a type definition for JSON.

What schema versions are supported?

The validator supports common drafts including Draft 4, 6, 7 and 2020-12, with format validation.

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