Free Online JSON Formatter

Beautify, minify, and validate JSON.

Formatted JSON will appear here

About the JSON Formatter

This free online JSON formatter helps you beautify, minify, and validate JSON data instantly. Paste any JSON string and get a properly indented, syntax-highlighted output with error detection pointing to exact line and character positions.


All processing runs entirely in your browser using the native JSON.parse() and JSON.stringify() APIs. No data is sent to any server, making it safe for sensitive payloads like API responses, config files, and database exports. The tool also shows statistics including key count, nesting depth, and data size.

How to Format JSON

  1. Paste JSON: Paste or type your JSON in the left panel.
  2. Beautify: Click "Beautify" to pretty-print with your chosen indentation.
  3. Minify: Click "Minify" to compress into a single line.
  4. Copy: Click "Copy" to copy the formatted output to your clipboard.

Common Use Cases

  • API Debugging: Format raw API responses for easier reading.
  • Config Files: Validate and beautify package.json, tsconfig, etc.
  • Data Inspection: Explore nested objects and arrays visually.
  • Minification: Compress JSON for storage or transmission.