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Format and validate JSON.

📘 How to Use

  1. Paste the JSON you want to format into the text area.
  2. View the automatically indented and cleanly formatted output.
  3. Use the Copy button to retrieve the formatted code.

JSON Formatter

JSON Formatter

Format and validate JSON.

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Format and Validate JSON

💡 About This Tool

Instantly beautify minified JSON or validate syntax. Use this tool to debug API responses, clean up configuration files, and convert raw strings into readable, properly indented code.

📘 Usage Tips

  • Format and Validate Paste a raw string to apply clean 4-space indentation. The tool automatically catches syntax errors like trailing commas or unclosed brackets.
  • Compress for Production Use the "Minify" function to strip whitespace and newlines, reducing your payload size for production environments.
  • Debug in Real-Time Identify issues quickly with instant feedback on invalid JSON, helping you pinpoint exactly where your syntax failed.

🧐 Frequently Asked Questions

What is JSON?

JSON (JavaScript Object Notation) is a lightweight, text-based format for exchanging data. It is the industry standard for REST APIs and configuration files.

Are comments supported?

No. Standard JSON (RFC 8259) does not support comments. Including // or /* */ will trigger a parse error. If you require comments, you may need a superset like JSON5.

📚 Trivia

While JSON syntax is derived from JavaScript object literals, it is a language-independent text format. It replaced XML as the web’s dominant data format because it is more concise and easier for both humans and machines to parse.