JavaScript Minifier
Minify JavaScript by removing comments, whitespace, and unnecessary characters to reduce file size.
How to Use
Paste your JavaScript code into the input box.
Choose your minification options.
Click 'Minify' to process your JavaScript.
Copy the minified result. The tool shows file size savings.
Frequently Asked Questions
What does JS minification do?
JS minification removes comments, extra whitespace, and newlines without changing your code's behavior. This makes the file smaller and faster to download.
Is this a full production minifier?
This tool performs basic minification (comment/whitespace removal). For production builds, tools like Terser or esbuild also do variable renaming and dead code elimination. This tool is great for quick minification and understanding file size savings.
Will minification break my JavaScript?
Basic minification (removing comments and whitespace) is safe. However, always test your minified code. Some edge cases with template literals or regex patterns may need manual review.
Is my code sent to any server?
No. All minification happens entirely in your browser. Your code never leaves your device.