JSON looks simple until it does not. One missing comma, one extra brace, or a trailing comma in the wrong place, and a JSON payload silently breaks your application. A formatter does two jobs at once: it tells you whether your JSON is valid, and it makes it readable.

What Validation Catches

• Trailing commas after the last item in an object or array
• Unquoted or single-quoted keys, which are not valid JSON
• Mismatched brackets and braces
• Missing commas between key-value pairs

Validate, Then Pretty-Print

Paste your JSON into the JSON Formatter, choose 2-space, 4-space, or tab indentation, and click Format. If anything is wrong, you get a clear error message instead of a wall of red squiggly underlines. If you just need a compact version for an API request, the Minify button strips all whitespace in one click.

Try the JSON Formatter now, and if you need to turn that data into a database table, pair it with our JSON to SQL Converter.