Free CSS & JavaScript Minifier
Compress CSS and JS files instantly for free by removing unnecessary whitespace, line breaks, and comments.
How to Use Instructions:
- Paste your raw CSS or JavaScript source code into the input box.
- Click Minify Code to instantly remove comments, line breaks, and whitespace.
- Click Copy Code to copy the minified, production-ready code to your clipboard.
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About This Tool
Reduce unnecessary whitespace and formatting in CSS or JavaScript to create a more compact representation for testing or deployment workflows. Always retain an unminified source version for maintenance.
How to Use It
Paste CSS or JavaScript into the appropriate input, run the minifier, review the output and compare behavior before replacing production assets.
How It Works
Minification removes characters that are unnecessary to the browser's parser, such as redundant whitespace and comments where supported. Safe transformations depend on the syntax and implementation.
Practical Example
A formatted CSS file containing indentation and comments can be reduced substantially while preserving the declarations required by the browser.
Frequently Asked Questions
Does minification improve performance automatically? Smaller files can reduce transfer size, but real performance also depends on caching, compression, request count and delivery.
Should I minify source files manually? Keep readable source files and generate minified assets as a build step when possible.
Can minification fix JavaScript bugs? No. It changes representation, not application logic, and bugs should be fixed in source code.