Beautify JavaScript online by adding readable indentation and line breaks to minified or messy code. Free JavaScript formatter, copy the result.
About this tool
Add readable indentation and line breaks to JavaScript source.
How to use JavaScript Formatter
- Paste a JavaScript snippet.
- Choose two spaces, four spaces or tabs.
- Review the output and test it in your normal development environment.
Worked example
Format a compact function before checking its branches and return values.
Does it type-check or lint the code?
No. Formatting does not prove correct syntax, types or runtime behavior.
Can I assume all modern syntax is handled perfectly?
No. Keep the original and review unusual syntax, template strings and comments before using the output.
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