Frontend utility
JavaScript Beautifier
Add indentation and line breaks to JavaScript source text.
● This tool runs entirely in your browser. Your input is never uploaded to our servers.
Output
Your result will appear here…
How to use JavaScript Beautifier
- Paste JavaScript source or compact code.
- Select Format to add line breaks and indentation.
- Review the output with a syntax-aware formatter for complex code.
Example
Input:
const greet=(name)=>{return `Hello, ${name}!`;};Output:
const greet = (name) => {
return `Hello, ${name}!`;
};Use cases
- Read compact snippets.
- Prepare code examples for documentation.
- Inspect simple scripts during debugging.
About this tool
Add indentation and line breaks to JavaScript source text. Processing happens locally in your browser, so your input is not sent to a server or included in analytics.
Frequently asked questions
Is this a full JavaScript parser?
No. This lightweight formatter does not understand every language construct or validate syntax.
Will it preserve behavior exactly?
It is intended for simple source snippets. Use a syntax-aware formatter for production code and verify the result.
Does code leave the browser?
No. Formatting runs locally.