🧩 JSON Formatter

Format, validate, and minify JSON data with syntax highlighting. Fix common JSON errors and beautify your data instantly.

JSON Input

Indent Size

Result

Formatted JSON will appear here...

🔒 All processing happens in your browser. No data is uploaded to any server.

📋 How to Use

Paste your JSON data into the input textarea.
Select your preferred indent size (2 spaces, 4 spaces, or tab).
Click "Format / Beautify" to pretty-print, or "Minify" to compress.
Use "Validate" to check if your JSON is valid.
Click "Copy Result" to copy the formatted output to your clipboard.

❓ FAQ

Does it support nested JSON objects and arrays?

Yes. The formatter fully supports nested objects, arrays, and mixed structures of any depth. The built-in JavaScript JSON parser handles all valid JSON structures.

Can it handle large JSON files?

Since processing happens in your browser, the size limit depends on your device's available memory. Most browsers can comfortably handle JSON files up to several megabytes in size.

Is there syntax highlighting?

Yes! The formatted output includes syntax highlighting with distinct colors for keys, strings, numbers, booleans, and null values, making it easy to read and debug.

What happens if my JSON is invalid?

The tool will display an error message with details about what went wrong, including the position of the error. This helps you quickly locate and fix syntax issues in your JSON.

💡 Use Cases

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API Debugging

Format API responses for easier reading and debugging during development.

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Configuration Files

Beautify JSON configuration files for better readability and maintenance.

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Code Review

Quickly validate and format JSON data during code reviews and pair programming.