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CSS & JS Minifier Online — Free Tool

Compress your CSS and JavaScript code by stripping unnecessary whitespace and comments to optimize load times.

Note: This is a best-effort minifier (no full parser). For production builds, use a bundler/minifier.
Privacy note: All processing happens entirely in your browser. No data is sent to our servers.

About this tool

CSS & JS Minifier helps developers compress your css and javascript code by stripping unnecessary whitespace and comments to optimize load times. Paste your payload or source text, run the tool, and copy the output into your editor, API client, or terminal.

Everything runs locally in the browser, which keeps tokens, queries, and proprietary data off third-party servers.

How to use

  1. Paste or type your input in the tool panel above.
  2. Choose formatting or conversion options if available.
  3. Copy the output for use in your document or project.

This page is available at /tools/css-js-minifier/.

Related keywords

  • css minifier
  • js minifier
  • minify css
  • minify javascript
  • code minifier

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FAQ

What is CSS & JS Minifier?

CSS & JS Minifier is an online developer tool that compress your CSS and JavaScript code by stripping unnecessary whitespace and comments to optimize load times.

How do I use the CSS & JS Minifier?

Paste your code, JSON, token, or query into the editor, run the tool, and copy the formatted or converted result into your project.

Is this tool free?

Yes—this tool is free to use with no account required.

Does it run locally in the browser?

Yes. Calculations and transformations run in your browser—your input stays on your device.