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JSON Formatter

Beautify, validate, and minify JSON data

Format, validate, and beautify your JSON data instantly with our free online JSON formatter. Whether you're debugging API responses, cleaning up configuration files, or preparing data for documentation, this tool makes JSON readable and well-structured. Minify JSON for production use or beautify it for development. All processing happens in your browser, keeping your data private and secure.

Input
Result
Result will appear here...

How to Use JSON Formatter

  • Paste JSON: Copy your JSON data and paste it into the input area.
  • Beautify: Click "Beautify" to format JSON with proper indentation and line breaks.
  • Minify: Click "Minify" to compress JSON by removing whitespace.
  • Validate: Click "Validate" to check if your JSON is syntactically correct.
  • Copy: Use "Copy Result" to copy the formatted output to your clipboard.

Example

Paste minified JSON like {"name":"John","age":30,"city":"NYC"} and click Beautify. The result will be properly indented with each property on its own line, making it easy to read and edit.

Frequently Asked Questions

Q: What happens if my JSON is invalid?
A: The tool will display an error message indicating what's wrong and approximately where the error occurs. Common issues include missing commas, unquoted keys, or trailing commas.

Q: Can this tool handle large JSON files?
A: Yes, it can handle reasonably large JSON files (several MB). However, extremely large files may cause browser slowdowns since all processing happens client-side.

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