JSON Formatter

Paste JSON to pretty-print it, minify it, or find exactly where a syntax error is. Processing is local, so it's safe for API responses and config files.

Free No sign-up Runs in your browser

How to use the JSON Formatter

  1. Paste your JSON.
  2. Click Format or Minify.
  3. Copy the result.

Frequently asked questions

Why is my JSON invalid?

Common causes are trailing commas, single quotes instead of double quotes, unquoted keys and comments — none of which are allowed in standard JSON.

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