JSON Formatter
Instantly format and validate messy JSON data into a readable layout. A simple and powerful tool for debugging and development.
Paste messy JSON and get clean, indented output with syntax validation. Ideal for debugging API responses, inspecting payloads, and code reviews.
JSON Formatter
Instantly format and validate messy JSON data into a readable layout. A simple and powerful tool for debugging and development.
About this tool
Paste messy JSON and get clean, indented output with syntax validation. Ideal for debugging API responses, inspecting payloads, and code reviews.
Enter your JSON data to format it.
Output appears here...
Enter your JSON data to format it.
FAQ
Common questions and answers about this topic.
What does this JSON formatter do?
It auto-formats and validates your JSON data with proper indentation, making it easy to read, debug, and share.
Can I customize the indentation?
Yes, choose 2 or 4 spaces, or tabs. JSON convention typically uses 2 spaces.
Does it validate the JSON?
Yes, if your JSON contains syntax errors, the tool will display an error message indicating where the problem is, helping you quickly fix invalid JSON.
Is my data sent to any server?
No, JSON formatting is handled entirely in your browser. Your data is parsed and re-formatted locally with JavaScript — nothing leaves your device.