JSON Validator

Validate JSON syntax and structure with detailed error reporting.

Input (JSON)
Validation Results

Enter JSON and click Validate

Validation Features

Syntax Validation

Real-time JSON parsing with precise error location reporting including line and column numbers.

Schema Validation

Optional JSON Schema support to validate structure, types, required properties, and nested constraints.

Structure Analysis

Get insights into your JSON: root type, total keys, nesting depth, and byte size.

Fix Suggestions

Contextual suggestions for common JSON errors like trailing commas, missing quotes, and truncated input.

All validation happens locally in your browser. No data is sent to any server.