JSON Formatter & Validator

Format, beautify, minify, and validate JSON data with syntax error detection.

How to Use JSON Formatter

  1. Paste your JSON into the input field
  2. Select your preferred indentation
  3. Click Format to beautify, Minify to compress, or Validate to check
  4. Copy the result or download as a file

Features

  • Format/Beautify - Add proper indentation and line breaks
  • Minify - Remove all whitespace for smaller file size
  • Validate - Check if JSON is valid with error details
  • Customizable Indent - 2 spaces, 4 spaces, or tabs

Common JSON Errors

  • Missing or extra commas
  • Unquoted property names
  • Single quotes instead of double quotes
  • Trailing commas after last item
  • Missing closing brackets or braces

Why Format JSON?

  • Improve readability for debugging
  • Easier to compare JSON structures
  • Spot errors in nested data
  • Prepare for documentation
  • Works entirely in your browser - no data is sent to any server