JS & CSS Beautifier

The JS & CSS Beautifier turns minified or untidy code back into clean, readable, indented code — right in your browser.

Paste JavaScript or CSS, pick your indentation, and copy the tidy result. Nothing is uploaded.

How to beautify code

1. Choose a language. JavaScript or CSS.
2. Paste your code. Minified, one-line, or just messy.
3. Set the indentation. Two spaces, four spaces, or tabs.
4. Beautify and copy. Read the formatted output and copy it in a click.

Why readable code matters

Minified code is built for machines, not people, so a single line can hide a whole file's worth of logic. Beautifying restores the structure you need to understand or debug it.

Formatting locally means you can safely tidy proprietary code without sending it to an unknown server.

• Private: code is formatted on your device, never uploaded.
• Both languages: JavaScript and CSS in one tool.
• Your style: spaces or tabs, your choice.
• Safe: only whitespace changes, never behaviour.

Related formatting tools

The same idea applies to markup. To tidy messy HTML, the HTML Beautifier reindents tags into a clean structure.

When you need to go the other way and shrink files for production, the CSS Minifier and JavaScript Minifier strip out whitespace to make them as small as possible.

Frequently Asked Questions

Is my code uploaded to format it?

No. The beautifier runs entirely in your browser, so your JavaScript and CSS never leave your device. Nothing is uploaded or stored.

Does it work on minified code?

Yes. That is its main job — it takes minified one-liners and reflows them into properly indented, structured code you can read and edit.

Can I choose the indentation?

Yes. Format with two spaces, four spaces, or tabs, whichever matches your project's style.

Does beautifying change what the code does?

No. It only adds whitespace and line breaks to improve readability; the logic and behaviour of the code stay exactly the same.

Can it handle both JavaScript and CSS?

Yes. Switch between JavaScript and CSS modes, and the correct formatter is used for each language.