Code Minifier
Minify JavaScript, CSS, and HTML by removing comments, whitespace, and unnecessary characters.
Minified output will appear here
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Everything you need to know
Free Online Code Minifier
Paste your JavaScript, CSS, or HTML code and instantly get a minified version with all comments, unnecessary whitespace, and line breaks removed. The tool displays original and minified file sizes along with the exact savings percentage, helping you understand the impact of minification on your assets.
JavaScript Minification
The JavaScript minifier removes single-line and multi-line comments, collapses whitespace, and eliminates unnecessary line breaks. It preserves code functionality while reducing file size significantly. For quick checks and one-off minification tasks, this browser-based tool is faster than setting up a build pipeline.
CSS Minification
CSS minification strips comments, collapses whitespace around selectors and properties, and removes unnecessary semicolons before closing braces. The result is a compact, production-ready stylesheet that loads faster and consumes less bandwidth.
HTML Minification
HTML minification removes comments and whitespace between tags. This is especially useful for email templates, embedded widgets, and single-page applications where every byte counts. The minified output maintains proper tag structure and content.
Privacy & Security
All code processing happens in your browser — no source code is transmitted to any server. This makes it safe to minify proprietary code, internal libraries, or code containing sensitive information.
Related Developer Tools
Format code with the JSON Formatter or HTML Formatter, or compare files with the Diff Checker.