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JSON Formatter & Validator

Paste minified or messy JSON to instantly format, beautify, and validate it with syntax highlighting.

JSON Formatter

Paste your JSON on the top and get pretty‑printed output below.

Input JSONUnformatted / minified
Formatted JSON

Formatted JSON will appear here...

How to use

  1. Paste your JSON into the input area.
  2. Click "Format JSON" to pretty-print with 2-space indentation.
  3. Copy the formatted output with the copy button.

Everything runs in your browser — no data is sent to any server.