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JSON Formatter

Format, validate, and minify JSON with proper indentation.

About JSON Formatting

Paste minified or messy JSON to pretty-print it with proper indentation, or use Minify to strip whitespace for compact storage or transmission. Invalid JSON is caught immediately with a clear error message. Everything runs locally in your browser — nothing is uploaded anywhere.

About this tool

Paste minified or messy JSON to pretty-print it with 2 or 4-space indentation, or minify it for compact storage. Invalid JSON is caught with a clear error message.

Key Features

  • Format with 2 or 4-space indent
  • Minify to compact JSON
  • Inline error messages
  • Copy to clipboard