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JSON Schema Validator

Validate JSON data against a JSON Schema definition with multi-draft support

Schema Draft
Load Example

Validate JSON against a schema

Supports drafts 04, 06, 07, 2019-09, and 2020-12

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Валидация JSON Schema: полное руководство по драфтам и правилам

Валидируйте JSON-документы с JSON Schema. Узнайте о версиях драфтов и распространённых паттернах.

What Is JSON Schema?

JSON Schema is a vocabulary for annotating and validating JSON documents. It defines the structure, types, and constraints that a JSON document must satisfy. Think of it as a contract — the schema describes what valid data looks like, and validators check whether a document conforms to that contract.