{DT}DevToolkit

JSON Formatter & Validator

Format, beautify, and validate JSON online. Minify for production or pretty-print for readability.

Input

Output

Paste JSON to format

How to Use

  1. Paste your JSON into the input panel on the left
  2. The output will automatically format with your chosen settings
  3. Select indent style: 2 spaces, 4 spaces, tabs, or minified
  4. Enable "Sort Keys" to alphabetize object properties
  5. Copy the result or download as a .json file

Features

  • Real-time formatting as you type
  • Instant JSON validation with error details
  • Multiple indent options (2/4 spaces, tabs)
  • Minify mode for production
  • Alphabetical key sorting
  • Size comparison (before/after)
  • Copy and download output
  • 100% client-side processing

Frequently Asked Questions