JavaScript Minifier
Minify JavaScript by removing whitespace and comments. Shows compression ratio after processing.
What JavaScript Minification Does
Minification removes comments, extra whitespace, and line breaks from JavaScript without changing how the code runs. The result is a smaller file that loads faster, which matters for pages that ship a lot of client-side code. This tool is useful before deploying a small script, pasting code into a CDN, or preparing a demo for a tutorial.
Before You Deploy
- Keep a readable copy of the original source in version control
- Test the minified output in the browser or run environment
- Check that your build process does not already minify the file
Can minification break my code?
It can if your code depends on comments or line breaks, which is rare but possible. Always test before using the output in production.