Is my JavaScript code sent to a server?

No. All formatting happens entirely in your browser. Your code is never transmitted to any server — it stays on your device throughout the process.

Does it work on minified or obfuscated JavaScript?

Yes. The beautifier handles minified code well, expanding it into a readable format with proper indentation and line breaks. Heavily obfuscated code (with renamed variables) will be formatted but the logic will still be hard to read by design.

Will beautifying change how my JavaScript behaves?

No. Beautifying only adds whitespace and indentation for readability. It never alters variable names, logic, execution order or any functional aspect of your code.

What indentation options are available?

You can choose between spaces (2 or 4 spaces per level) and tabs. The choice is cosmetic and does not affect how the code runs.

Can I also minify JavaScript with this tool?

This tool focuses on beautifying (expanding) JavaScript. For minification, use EazyStudio's free Code Minifier which can strip whitespace from JS, CSS and HTML to reduce file sizes.

Free JavaScript Beautifier Online — Format & Clean JS Code

JavaScript Beautifier

Format and clean up your JavaScript code instantly

Input JavaScript

Formatted JavaScript

Indent Size:

Preserve newlines

Braces on own line

Format and Clean Your JavaScript

A JavaScript beautifier reformats minified or messy JS into clean, readable code with consistent indentation, spacing and line breaks. Paste compressed code from a production bundle or untidy code from anywhere and instantly get a properly formatted version that is far easier to read, review and debug.

It is a developer staple for inspecting third-party scripts and tidying your own code. Formatting happens entirely in your browser, so your code is never uploaded.

Frequently Asked Questions

What does a JavaScript beautifier do?

It re-indents and re-spaces your code into a clean, consistent layout without changing what the code does — only whitespace and formatting are affected.

Can it format minified JavaScript?

Yes. Paste minified or compressed JS and the beautifier expands it into readable, indented code, which is useful for debugging production bundles.

Does beautifying change how my code runs?

No. The logic is untouched; the output behaves identically to the input.

Is my code uploaded anywhere?

No. The tool runs locally in your browser, so your code stays private.

Is it free?

Yes, the JavaScript beautifier is free with no sign-up.

JavaScript Beautifier

Format and Clean Your JavaScript

Frequently Asked Questions

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