JSON Formatter

Format, validate, and minify JSON with syntax error detection, entirely in your browser.

Valid JSON

Input

Formatted output

{
  "name": "WikiSolutions",
  "tools": 15,
  "free": true
}

About the JSON Formatter

Paste any JSON into the input box and this tool validates it instantly, showing a clear error message if it's malformed. Use Format to pretty-print with 2 or 4-space indentation, or Minify to strip all whitespace for production. The output panel updates live and can be copied or downloaded as a .json file.