DevTools Web

JSON Formatter & Validator

Format, validate, and beautify JSON data instantly. Improve readability and detect errors in your JSON structure.

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data format used for storing and exchanging data between systems.

Why use a JSON formatter?

Raw JSON data is often hard to read. Formatting helps structure the data with indentation, making it easier to debug and understand.

Common Use Cases

  • Debugging API responses
  • Validating JSON structure
  • Improving readability of data
  • Working with REST APIs

Example


{"name":"John","age":30}

Formatted:


{
  "name": "John",
  "age": 30
}

PHP Example


// Format JSON
json_encode($data, JSON_PRETTY_PRINT);

// Validate JSON
json_decode($json);

FAQ

What happens if my JSON is invalid?

The formatter will not be able to parse it. Make sure your JSON syntax is correct (quotes, commas, brackets).

Does this tool store my data?

No. All processing happens instantly and your data is not stored.