Minify JavaScript code and reduce file size instantly
Free online JavaScript minifier. Remove comments, collapse whitespace, and shrink your JS files. See exact byte savings. Works entirely in your browser.
Minification removes comments, extra whitespace, and newlines from JavaScript code, reducing file size without changing functionality.
Yes. Minified JS runs identically to the original — browsers don't care about whitespace or comments.
Yes. Minified files load faster, improving Core Web Vitals and user experience. Most build tools (Vite, webpack) minify automatically.
Minification only removes whitespace and comments. Obfuscation also renames variables to make code hard to read. This tool only minifies.
No. All processing happens locally in your browser. Your code never leaves your machine.
Last updated: January 2025