JavaScript Minifier
Minify and beautify JavaScript instantly. Remove comments, whitespace, and newlines to reduce file size. Download as .min.js — free online JS minifier tool.
About This Tool
- Instant JavaScript minification right in your browser
- Shows file size comparison and savings percentage
- Also beautifies minified JS for readability
- Completely free with no registration required
Frequently Asked Questions
JavaScript minification removes all unnecessary characters from JS code — comments, whitespace, newlines, and extra spaces — without changing how it works. This reduces file size and improves page load speed.
Yes, JavaScript minification only removes characters that don't affect how the code runs. Your JavaScript will work exactly the same after minification. All processing happens in your browser — no data is sent to any server.
Typically, JavaScript files can be reduced by 20-60% through minification. Files with lots of comments, whitespace, and formatting see the biggest reductions. The stats display shows you the exact savings.
Yes, completely free with no registration. Minify as much JavaScript as you need and download the result as a .min.js file.