Developer Tools

JavaScript Minifier

Paste your JavaScript to remove comments and whitespace. Compare original vs minified sizes and copy the optimized output.

Why Minify?

Minification reduces file size by removing unnecessary characters like comments, whitespace, and newlines. Smaller files load faster, improving page speed and user experience.

Features

• Remove single-line comments
• Remove multi-line comments
• Collapse whitespace
• Size comparison stats
• Copy minified output

Does this rename variables?

No. This is a basic minifier that removes comments and whitespace. It does not perform variable renaming or tree shaking — use a build tool like Terser for that.

Will it break my code?

The minifier preserves string literals and avoids removing meaningful whitespace. However, always test minified code before deploying to production.

Is my code sent to a server?

No. All minification happens entirely in your browser. Your code stays on your device.