HTML, CSS and JS minifier
Minify HTML, CSS or JavaScript by removing comments, whitespace and unnecessary characters. Reduce file size for faster loading.
- Free, no sign-up
- No data stored
- Reviewed 2026-01-15
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About the HTML/CSS/JS Minifier
Paste HTML, CSS or JavaScript to remove comments, collapse whitespace and strip unnecessary characters. The output is functionally identical but smaller — ideal for production deployment.
How to use the HTML/CSS/JS Minifier
- Paste your code.
- Select the type: HTML, CSS or JS.
- Choose options: remove comments, collapse whitespace.
- View the minified output and size savings.
Frequently asked questions
How much can minification save?
Typically 10–30% for HTML, 20–40% for CSS and 30–60% for JS (before gzip). Combined with gzip/brotli compression, total savings are even greater.
Does minification break functionality?
Properly implemented minification preserves functionality. However, JS minification with variable renaming (not done here) can break if code relies on function names.
Should I minify if I use gzip?
Yes. Minification + compression stack — minification removes redundancy that gzip cannot always detect.