Developer Tools

Minify CSS & JavaScript Instantly

Compress your CSS and JavaScript code to reduce file size, improve loading speed, and save bandwidth. All processing happens directly in your browser — your code never leaves your device.

CSS Minification removes comments, extra whitespace, and newlines — reducing file size without changing how styles are applied.

Paste your CSS code here

Paste your code then click the minify button.

Smaller files. Faster websites.

From optimizing production builds to cleaning up legacy stylesheets — the CSS & JS Minifier helps you reduce file size and improve performance with zero effort.

Client-Side Only
Your code is never sent to any server. All minification runs directly in your browser — completely private and secure.

CSS Minification
Strips comments, collapses whitespace, removes line breaks, and shortens zero values — all safe transformations.

JS Minification
Removes single-line and block comments, collapses extra whitespace and blank lines while keeping your code functional.

Compression Stats
See the original size, minified size, and exactly how many bytes (and %) you saved at a glance.

Tab Switcher
Switch between CSS and JS mode with one click. Input, output, and labels update instantly.

One-Click Copy
Copy the minified output to your clipboard instantly with the copy button — no fuss, no selection required.

No Login Required
Use it anytime without signing up. No tracking, no cookies, no limits.

Free Forever
Completely free to use — as many times as you need, with no paywalls or ads.

Frequently Asked Questions

What is a CSS/JS Minifier?

A CSS/JS Minifier is a tool that removes unnecessary characters from CSS or JavaScript source code — such as comments, whitespace, and newlines — without changing what the code does. The result is a smaller file that loads faster in the browser.

Is it safe to minify production CSS/JS here?

What does CSS minification remove?

What does JS minification remove?

Will minification break my code?

What do the compression stats mean?

Can I minify very large files?

Does this tool support SCSS or TypeScript?

How do I use the minified output?

Is this tool free?