NewTools

JSON Formatter

Paste your JSON and get it formatted instantly.

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Free Online JSON Formatter & Validator

NewTools's JSON formatter lets you paste raw or minified JSON and instantly get a beautifully formatted, readable output. It also validates your JSON in real-time and highlights errors so you can fix them fast. No ads, no sign-up — just paste and format.

What This Tool Does

  • Format JSON — pretty-print with 2 or 4 space indentation
  • Minify JSON — compress to a single line for APIs and storage
  • Validate JSON — instantly detect and display syntax errors
  • Copy output — one-click copy of the formatted or minified result
  • Paste & go — paste from clipboard and see results immediately
  • Sample JSON — load example data to see the tool in action

Frequently Asked Questions

How does the JSON formatter work?

Paste your JSON into the input panel on the left. The tool parses it in real-time and displays the formatted output on the right. If there's a syntax error, it will show you the exact error message.

Can I minify JSON with this tool?

Yes. Click the "Minify" button to compress your JSON into a single line with no whitespace — perfect for API payloads and config files.

Does this tool validate my JSON?

Yes. The formatter validates your JSON as you type. Valid JSON shows a green checkmark; invalid JSON shows the error message so you can fix it immediately.

Is this JSON formatter free?

Completely free. No ads, no sign-up, no limits. Use it as often as you need.