Enter JSON and click Validate to see the result.

Ensure Your JSON is Perfect with Our Online Validator

A single misplaced comma or a wrong type of quote can render an entire JSON structure useless. Our JSON Validator is an essential tool for developers and anyone working with JSON data. It provides a quick and easy way to perform a syntax check on your JSON, ensuring it adheres to the strict rules of the format. By pasting your code, you get an immediate verdict: is your JSON valid or invalid?

If your code is invalid, our tool doesn't just fail silently. It provides a clear, descriptive error message that helps you pinpoint the exact problem, saving you valuable debugging time. This makes it perfect for checking API responses, configuration files, and any other JSON-based data.

How to Validate Your JSON

1. Paste Your JSON Code: Copy your JSON data and paste it into the input field above.
2. Click to Validate: Hit the "Validate JSON" button.
3. Check the Result: The tool will instantly display a success message for valid JSON or a detailed error message if it finds any syntax problems.

Frequently Asked Questions About JSON Validator

What is a JSON Validator?

A JSON Validator is a tool that checks if a string of text follows the correct syntax rules of the JSON (JavaScript Object Notation) format. It parses the data and reports whether it is 'valid' (error-free) or 'invalid', often providing details about the location and type of any syntax errors found.

How do I validate a JSON file?

To validate a JSON file, open the file in a text editor, copy its entire contents, and paste it into the input field of an online JSON Validator. Click the 'Validate JSON' button, and the tool will instantly tell you if the file's content is valid or invalid.

What makes a JSON invalid?

Common issues that make JSON invalid include: missing or extra commas, using single quotes instead of double quotes for keys and string values, unclosed brackets or braces, and having comments, which are not supported in the official JSON specification. A validator will catch these and other syntax violations.

How does an online JSON validator work?

An online JSON validator works by using a programming language's built-in JSON parser (like JavaScript's `JSON.parse()` method). It attempts to parse the input string. If the process completes without any issues, the JSON is valid. If the parser encounters a syntax error, it throws an exception, which the tool catches and displays to the user as a validation error message.

Is a JSON validator the same as a JSON linter?

While related, they are not exactly the same. A JSON validator strictly checks for syntax validity—if it can be parsed, it's valid. A JSON linter goes a step further by also checking for stylistic issues, potential problems, or inconsistencies (like duplicate keys) that might not be syntax errors but are considered bad practice.