JSON Formatter & Validator

Instantly format, validate, and pretty print JSON data. This tool is 100% client-side for maximum privacy and speed.

How to Format (Pretty Print) Your JSON

Our formatter instantly takes compressed JSON and applies standard indentation (2 spaces) and line breaks, transforming it into a clean, human-readable structure. This "pretty print" feature is essential for reviewing data or debugging API responses quickly.

Why Line Numbers and Validation are Essential for Developers

A single misplaced comma or bracket can break an entire JSON file. By providing line numbers next to the input, our validator helps you pinpoint the exact location of the syntax error instantly, saving you valuable debugging time. Since the tool is 100% client-side, your data remains secure throughout this process.

Key Features of the QuickUseTools JSON Utility

  • Real-time Line Numbering: Easily track where errors are located.
  • Instant Validation & Error Pointing: Get precise feedback on syntax errors.
  • Pretty Print (Beautification): Converts ugly, single-line JSON into a clear, nested structure.
  • One-Click Copy: Easily move the formatted output to your clipboard.