ToolsArm

JSON Formatter & Validator

Format, validate, and minify JSON data with real-time validation

Settings & Actions

Input JSON

0 characters

Formatted JSON

0 characters

Features

Formatting Options

  • • Auto-format as you type
  • • Customizable indentation (2, 4, 8 spaces)
  • • Sort object keys alphabetically
  • • Minify for production use

Validation

  • • Real-time syntax validation
  • • Detailed error messages
  • • Visual validation indicators
  • • Support for nested objects and arrays

File Operations

  • • Upload JSON files
  • • Download formatted JSON
  • • Copy to clipboard
  • • Load sample data