Json Validator & Formatter
Paste your Json string below and preview formated Json.
About the JSON Formatter
JSON (JavaScript Object Notation) is a widely used format for data exchange between applications. However, raw or unformatted JSON can be difficult to read and debug. Our free JSON Formatter & Validator automatically structures your JSON with proper indentation, highlights syntax issues, and ensures your data is valid.
When Should You Use a JSON Formatter?
- API Development: Validate JSON responses from REST APIs.
- Debugging: Quickly spot missing brackets, commas, or invalid keys.
- Data Exchange: Ensure JSON files shared between systems are properly structured.
- Learning: Beginners can easily understand JSON syntax with formatted output.
Examples
Unformatted JSON
{"name":"John","age":30,"city":"New York","skills":["Java","C#","Python"]}
Formatted JSON
{
"name": "John",
"age": 30,
"city": "New York",
"skills": [
"Java",
"C#",
"Python"
]
}
How to Use the JSON Formatter
- Paste your unformatted JSON into the input box above.
- Click the Format JSON button.
- View the beautified, properly indented JSON in the output box.
- Fix any errors highlighted by the validator before exporting.
Why Use Our JSON Formatter Online?
Our JSON Formatter Online (also known as JSON Beautifier, JSON Validator, or JSON Pretty Printer) helps developers and analysts clean, validate, and debug JSON quickly. Unlike complex IDE plugins, this JSON Formatting Tool works directly in your browser — fast, reliable, and installation-free.