Format, beautify, minify, and validate JSON data online. Instant error detection for invalid JSON.
JSON formatting (beautifying) adds proper indentation and line breaks to make JSON data readable. Minifying does the reverse — removes whitespace to reduce file size.
Yes! The tool validates your JSON as you format. If the JSON is invalid, it will show an error message explaining what went wrong.
All processing happens in your browser. Your JSON data is never sent to our servers.
We use 2-space indentation by default, which is the most common convention for JSON files.