Developer Tools
JavaScript Minifier
Lightweight JavaScript minifier that removes comments and unnecessary whitespace. For heavy compression use a full toolchain (esbuild, terser).
Output
Output will appear here…About the JavaScript Minifier
Comments and formatting in shipped JavaScript cost every visitor bandwidth and parse time for no runtime benefit.
This lightweight minifier strips comments and unnecessary whitespace. For mangling, tree-shaking and dead-code elimination, use esbuild or terser in your build.
How to use the JavaScript Minifier
- Paste your JavaScript into the input field.
- Minify and check the size reduction.
- Test the output — code relying on automatic semicolon insertion is the main thing that can break.
- Use it for small inline scripts and snippets; route production bundles through a real build tool.