JSON Validator

Validate your JSON against RFC 4627 and JavaScript specification quickly and easily. Ensure your data structure is correct with our free online tool.

Input JSON

Enter your JSON or upload a file (Max size: 2MB)

Choose FileNo file chosen

How to Use Our JSON Validator

Enter or Upload JSON

Paste your JSON code into the input area or upload a JSON file (up to 2MB).

Validate

Click Validate to check your JSON against RFC 4627, JavaScript specification, and JavaScript usability.

Review Results

View detailed validation messages and copy or download your JSON.

Features

RFC 4627 Compliance

Validate JSON against the official RFC 4627 specification.

JavaScript Compatibility

Ensure JSON adheres to JavaScript object notation rules.

File Upload

Upload JSON files up to 2MB for quick validation.

Detailed Feedback

Get detailed error and warning messages for invalid JSON.

Popular Use Cases

API Development

Validate JSON data for APIs to ensure compatibility and correctness.

Data Exchange

Ensure JSON data exchanged between systems is valid and well-formed.

Debugging

Identify and fix JSON issues before deployment.

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