Toolzipp

JSON Formatter & Validator

Format, validate, and minify JSON online, free, right in your browser — pretty-print with indentation or minify to a single line.

How to use the JSON Formatter & Validator

  1. Paste your JSON into the input box.
  2. Click "Format" to pretty-print it, or "Minify" to compress it to one line.
  3. If the JSON is invalid, the parse error is shown.
  4. Click "Copy Output" to copy the result.

Frequently asked questions