JS Minifier
Minify JavaScript code instantly. Remove comments, whitespace, and shrink file size.
Frequently Asked Questions
How does the JS minifier work? +
The minifier removes comments (both single-line and multi-line), strips unnecessary whitespace, collapses multiple spaces into one, and removes blank lines. Everything runs in your browser so your code never leaves your device.
Will minification break my JavaScript code? +
The minifier performs safe transformations like removing comments and whitespace. It does not rename variables or alter logic. However, always test minified code before deploying to production.
How much file size can I save by minifying JS? +
Savings vary depending on coding style. Well-commented code with generous whitespace can see 30-60% size reduction. Already compact code may only shrink 10-20%.
Is my code sent to a server? +
No. All processing happens entirely in your browser using JavaScript. Your code is never uploaded, stored, or transmitted anywhere.
What is the difference between minification and obfuscation? +
Minification reduces file size by removing unnecessary characters while keeping the code functionally identical. Obfuscation intentionally makes code hard to read by renaming variables and restructuring logic. This tool only performs minification.