Free Tool · Client-Side Only

JSON Schema
Validator.

Validate any JSON document against a JSON Schema (Draft 7). See all validation errors with precise paths and descriptive messages. Sample schemas for quick testing.

✅

JSON Schema Validator

JSON Schema
JSON Data
✅ JSON is valid — all schema constraints satisfied
    📖

    Common JSON Schema Keywords

    Type Validation
    type: "string"|"number"|"integer"|"boolean"|"array"|"object"|"null"
    enum: ["a","b","c"]
    const: "fixed-value"
    String Rules
    minLength, maxLength: integer
    pattern: "^[a-z]+$" (regex)
    format: "email"|"uri"|"date"
    Object Rules
    required: ["field1","field2"]
    properties: {field: schema}
    additionalProperties: false
    Array & Number Rules
    items: schema (array items)
    minItems, maxItems: integer
    minimum, maximum: number
    AquilaX Platform

    Validate API security
    at every commit.

    AquilaX scans API schemas, OpenAPI specs, and JSON validation code for missing input validation, injection vulnerabilities, and type confusion issues.

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