JS Minifier - Minify JavaScript Code Online Free

How to Use the JS Minifier

1. Paste your JavaScript code in the input area
2. Click Minify — instantly compresses your code
3. Copy the result — use the minified JS anywhere

Minifying JavaScript removes whitespace, comments, and line breaks to reduce file size. Smaller scripts load faster and improve page performance. All processing happens in your browser — nothing is uploaded.

Features

• Whitespace removal — strips spaces, tabs, newlines
• Comment stripping — removes // and /* */ comments
• Before/after comparison — see exact savings
• Reduction percentage — track compression ratio
• One-click copy — copy minified output instantly