JSON Formatter & Validator - Online JSON Tool

Free online JSON formatter, validator, and minifier with syntax highlighting and error detection. Format, validate, and minify JSON data instantly with our powerful JSON tool.

JSON Editor 0 characters

About JSON Formatter/Validator

A powerful tool for working with JSON data. Format messy JSON, validate syntax, minify for production, and detect errors with helpful error messages.

Features:

  • Real-time JSON validation
  • Pretty print formatting with customizable indentation
  • Minification for production use
  • Syntax error detection with line numbers
  • Sort object keys alphabetically
  • Copy to clipboard
  • Download formatted JSON
  • Character count display

Keyboard Shortcuts:

  • Ctrl/Cmd + Enter - Format JSON
  • Ctrl/Cmd + K - Clear editor