Paste your JavaScript below to minify it instantly. Removes comments and unnecessary whitespace to reduce file size.
JavaScript minification removes all characters that are not necessary for the code to run. This includes whitespace, line breaks, comments, and sometimes shortening variable names. The result is a smaller file that downloads faster and executes at the same speed.
Minification is a standard part of any production web build process. Tools like Webpack, Vite, and Parcel do it automatically. If you are not using a build tool you can use this tool to manually minify your JavaScript before deploying.
A typical JavaScript file can be reduced by 20 to 50 percent through minification. Files with lots of comments and whitespace see bigger reductions. Combined with gzip compression on the server, minified files can be 70 to 80 percent smaller than the original.
Yes. Basic minification only removes whitespace and comments which JavaScript ignores. The logic and behaviour of your code is unchanged. Always test minified code before deploying to production.
Yes, always. Keep your original source code and minify it as part of your deployment process. Never edit the minified version directly - it is very difficult to read and maintain.
Yes. Everything runs in your browser. Your JavaScript is never sent to any server.