JSON Schema Validator

Validate data against a schema

Free Online Tool

JSON Schema Validator — Complete Guide & Instructions

Paste a schema and data together as {"schema":{…},"data":{…}} and get every violation with its exact path — types, required fields, nested properties, enums, patterns and numeric ranges.

How to Use JSON Schema Validator

  1. 1 Paste the schema+data wrapper.
  2. 2 Click Validate.
  3. 3 Read pass/fail and per-path errors.

Key Features & Capabilities

  • Path-scoped error messages.
  • Nested object and array validation.
  • Enum, pattern and range checks.