Developer Tools
Minify CSS and JavaScript | JS, CSS & HTML Minifier
Use this free workflow to minify CSS and JavaScript online, plus HTML cleanup in the same browser session. Remove comments, extra whitespace, and unnecessary characters, then copy production-ready snippets.
Free · Runs in your browser · No signup · Files stay on your device
Paste your JavaScript, keep line numbers visible, and minify or copy the result inside fullscreen mode.
Quick examples
How to use
How to use Minify CSS and JavaScript | JS, CSS & HTML Minifier
- 1Select JavaScript, CSS, or HTML mode.
- 2Paste your code.
- 3Copy the minified result.
Tips
Quick tips
- JS minification removes comments and collapses whitespace.
- CSS minification removes comments, spacing, and extra semicolons from stylesheet snippets.
- HTML minification removes comments and whitespace between tags.
- For production use, consider a full minifier like Terser (JS) or html-minifier.
FAQ
Frequently asked questions
How can I minify CSS and JavaScript online?
Choose JavaScript mode for scripts or CSS mode for stylesheets, paste your code, and copy the minified output. HTML mode is available for markup cleanup in the same workflow.
Can I use this as a JS CSS minifier?
Yes. This page now supports JavaScript, CSS, and HTML modes so quick JS CSS minifier workflows can stay on one page.
Does this handle ES6+ syntax?
This does basic minification (comment/whitespace removal). For advanced JS optimization, use Terser.
Will minification break my code?
Basic minification is safe. Always test your output after minifying.
Related