JSON Formatter & Validator – Free Online Tool

Format, validate, and beautify your JSON data. Minify or prettify with custom indentation.

Input JSON

How to Format JSON

  1. Paste your JSON data in the input area
  2. Select your preferred indentation (2 spaces, 4 spaces, or tab)
  3. Click "Format / Beautify" to prettify or "Minify" to compress
  4. Copy the result or download as a file

Features

  • Format/Beautify: Pretty-print JSON with proper indentation
  • Minify: Remove whitespace for smaller file size
  • Validate: Check for syntax errors with detailed messages
  • Error Location: Shows exact position of errors
  • Download: Save formatted JSON as a file

Why Use Our JSON Formatter?

  • Instant: Real-time validation as you type
  • Free: No limits, no signup required
  • Private: All processing in your browser
  • Developer Friendly: Keyboard shortcuts supported