Free Code Minifier: Minify JavaScript, CSS & HTML Instantly

When you deploy a website to production, every kilobyte matters. Minifying your code removes all unnecessary characters — whitespace, comments, line breaks — without changing how the code behaves. The result is smaller files, faster downloads, and better performance.

What Does Minification Do?

Our Code Minifier handles JavaScript, CSS, and HTML. For JavaScript, it strips single-line and multi-line comments and collapses all whitespace. For CSS, it removes comments and optimizes spacing around selectors. For HTML, it removes HTML comments and collapses whitespace between tags. The result is production-ready code that works identically to the original.

Why Minify Your Code?

Minification directly improves your Core Web Vitals score. Google uses page speed as a ranking factor. A minified JavaScript file can be 30-60% smaller than the original. For a site with many scripts, this can shave seconds off load time — especially on slow mobile connections.

How to Use the Code Minifier

Select the language (JavaScript, CSS, or HTML), paste your code, and click "Minify". The tool instantly processes everything client-side — your code never leaves your browser. You will see the original and minified character counts along with the percentage reduction. Copy the result with one click.