JSON Schema Validator

Validate JSON against a documented practical subset of JSON Schema locally.

Validate JSON against schema subset

Supported subset

type, required, properties, items, minLength, maxLength, minimum, maximum, and enum.

Worked example

An object schema requiring a string name and numeric age passes when both properties are present with matching types and fails when a required property is missing.

Privacy

Both JSON documents remain in the browser.

Limitations

This is not a complete JSON Schema implementation. Advanced draft-specific keywords and remote references are not supported.