File ICU

Developer tool

Minify CSS, JavaScript, or HTML

Reduce formatting whitespace and comments in CSS, JavaScript, or HTML snippets without uploading code.

This is conservative formatting cleanup, not a production compiler. Review and test output.

Runs locally in your browser

Your text is not uploaded.

Simple steps

How it works

  1. 01

    Paste a CSS, JavaScript, or HTML snippet.

  2. 02

    Choose the language for conservative whitespace and comment cleanup.

  3. 03

    Copy the smaller output and review it before use.

Good to know

Frequently asked questions

Which languages are supported?

Choose CSS, JavaScript, or HTML.

Does this perform advanced code optimization?

No. It applies conservative comment and whitespace cleanup; it does not rename symbols or optimize program logic.

Should I test the output?

Yes. Review and test minified code in your project, especially scripts with unusual syntax or embedded content.

Can minification change strings?

The tool preserves quoted strings and template literals while reducing safe whitespace around them.

Is code uploaded?

No. Minification runs locally in your browser.

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