JS Beautifier

Format minified or messy JavaScript into clean, readable code. Instant, private, no upload.

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JavaScript Input

Formatted Output

Click Beautify to format your JavaScript code

Paste minified or obfuscated-looking JavaScript and get back properly indented, readable code — useful for understanding third-party scripts or cleaning up your own.

常见问题解答

Does this validate my code for errors?

No — it only reformats spacing and indentation. Syntax errors in the original code will remain in the formatted output.

Is my code uploaded anywhere?

No. Formatting runs entirely in your browser using a bundled formatting library — nothing is sent to a server.

Can I adjust the indentation style?

The tool uses a standard 2-space indent, matching common style guides for web code.

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