No. The code is never executed; only its formatting (indentation, spacing) is adjusted.

Does it un-minify code?

Yes. It can turn single-line, minified JS/CSS back into readable form.

JS / CSS Beautifier

Turns JavaScript or CSS into a neatly indented, readable form. Pick the language from the tab above.

Result

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About

Ideal for inspecting minified or badly indented JS/CSS files. Blocks are indented properly and lines are tidied up.

All processing happens in your browser; your code is never sent to a server.

How to use

Pick the JS or CSS tab.
Paste your code into the box.
Copy the beautified code.

Frequently Asked Questions

Does it run my code?: No. The code is never executed; only its formatting (indentation, spacing) is adjusted.
Does it un-minify code?: Yes. It can turn single-line, minified JS/CSS back into readable form.

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Embed this tool

Copy the code below and paste it into your site's HTML to embed this tool for free. The snippet includes an attribution link back to the source.

<iframe src="https://tooldict.com/embed/en/js-css-beautifier" title="JS / CSS Beautifier" width="100%" height="600" style="border:1px solid #e2e8f0;border-radius:16px;max-width:680px" loading="lazy"></iframe>
<p style="font:13px/1.5 sans-serif">Powered by <a href="https://tooldict.com/en/js-css-beautifier" target="_blank" rel="noopener">JS / CSS Beautifier</a> — Tooldict</p>