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JSON Formatter & Validator

Format, validate, and minify JSON instantly. Syntax highlighting, sort keys alphabetically, and live validation — no ads, no tracking, 100% client-side.

Indent:
Input
Output

How to use

  1. Paste JSON into the left panel — it validates live as you type and auto-formats on paste.
  2. Click Format to pretty-print with syntax highlighting, or Minify to strip all whitespace.
  3. Sort Keys reorders all object keys alphabetically — useful for diffing two JSON objects.
  4. Copy the formatted output with the Copy Output button.

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