JSON Formatter

Format and validate JSON with syntax highlighting.

Enter JSON

Indentation: 2 spaces

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Frequently Asked Questions

How does JSON formatting work?

The formatter parses your JSON and reformats it with proper indentation. All processing happens in your browser - your data never leaves your device.

What if my JSON is invalid?

The tool will show you the exact error message to help you fix the JSON. Common issues include missing quotes, trailing commas, or invalid characters.

Can I customize the indentation?

Yes, you can choose between 2 or 4 spaces for indentation. The default is 2 spaces.