Reduce your JavaScript file size by stripping comments and collapsing whitespace for faster page loads.
The JavaScript Minifier is a free online tool that compresses your JS code by removing both single-line and multi-line comments, trimming unnecessary whitespace, and collapsing blank lines. This basic minification focuses on whitespace and comment removal rather than variable renaming, keeping your code readable if needed while still achieving meaningful size reductions.
JavaScript files are often the largest assets on a web page, and even modest reductions in file size can have a significant impact on load times. Developers use minification as a standard optimization step before deploying to production, helping pages render faster and improving the overall user experience.
Paste your JavaScript into the input area and click the minify button. All processing happens locally in your browser — your code never leaves your machine. The tool displays the compressed result alongside detailed statistics showing the original size, minified size, and percentage reduction.
Whether you're preparing a quick script for production or need a fast way to strip comments from a file, this tool delivers instant results with no setup required. Copy the minified output and use it directly in your projects.