JSON Formatter

Instantly format, beautify, and validate JSON in your browser. Paste your JSON, click Prettify to make it readable or Minify to compress it. Free, private, no upload.

JSON Input

Formatted Output

Frequently Asked Questions

What is a JSON Formatter?

A JSON Formatter takes minified or messy JSON and reformats it with proper indentation and line breaks, making it easy to read and debug.

How do I format JSON online?

Paste your JSON into the input box and click Prettify. Use Minify to compress it back to a single line.

Does this formatter validate my JSON?

Yes. If your JSON contains syntax errors, the formatter displays the exact error message so you can fix it quickly.

Is this JSON formatter free?

Completely free. No signup, no upload — everything runs in your browser.