JSON (JavaScript Object Notation) is the universal data format of the web. Every developer who works with APIs, databases, config files or web apps works with JSON every day. Our free JSON formatter makes working with JSON faster and more reliable.
What You Can Do With This JSON Tool
- Format/Beautify — converts minified JSON to human-readable indented format
- Minify — removes all whitespace to reduce file size for production
- Validate — instantly checks if your JSON is syntactically valid
- Error detection — shows the exact line and character where an error occurs
- Indentation control — 2 spaces, 4 spaces, or tab indentation
Common JSON Errors and How to Fix Them
- Trailing comma — JSON does not allow a comma after the last item in an array or object
- Single quotes — JSON requires double quotes for strings, not single quotes
- Unescaped characters — special chars like backslash must be escaped
- Missing quotes on keys — all object keys must be in double quotes
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