Minify JavaScript to reduce file size and speed up load times. Paste your JS to strip comments and collapse whitespace into compact output you can copy in one click — a lightweight, private minifier that runs entirely in your browser with no uploads.
Minification removes comments and unnecessary whitespace so scripts download and parse faster. Use the JavaScript minifier for quick size reductions when a full build pipeline would be overkill.
Your source never leaves your browser, so proprietary scripts stay private. This is a fast whitespace-and-comment minifier — for advanced optimizations like variable mangling and tree-shaking, reach for a build-time tool such as Terser or esbuild.
Paste your JavaScript into the input and copy the minified output. Comments and unnecessary whitespace are removed to make the file smaller.
It removes comments and whitespace to shrink the file. It is a lightweight minifier, so for large or complex code run your tests afterward, or use a build-time tool like Terser for aggressive optimization.
No. Minification runs entirely in your browser; your JavaScript never leaves your device.