JSON Schema Validator
Validate JSON data against a JSON Schema. View detailed error messages with paths. Supports JSON Schema draft-07.
What is JSON Schema?
JSON Schema is a vocabulary that allows you to annotate and validate JSON documents. It defines the expected structure, data types, required fields, value constraints, and patterns for your JSON data. Think of it as a contract or blueprint that your JSON must conform to. JSON Schema is widely used for API request/response validation, configuration file verification, form generation, and documentation. It is defined by the IETF and the most common version in use is draft-07.
How to Validate JSON Against a Schema
Paste your JSON data in the left panel and your JSON Schema in the right panel, or load sample data to explore.
Click Validate to check if your JSON conforms to the schema. The tool reports all validation errors with exact paths.
Fix any reported errors using the detailed error messages, which show the failing path, expected type, and constraint.