JavaScript Minifier

Reduce JS file size by removing comments and collapsing whitespace. See exact bytes saved.

JavaScript Input

Remove // line comments Remove /* block */ comments Collapse whitespace Remove unnecessary newlines

Minified Output

How to use

Paste your JavaScript code into the input box above.
Choose which minification options to apply using the checkboxes.
Click Minify JavaScript to compress your code.
View the original size, minified size, reduction percentage, and bytes saved.
Copy the minified output or download it as a .js file.
For maximum safety, keep all options checked — this tool only removes whitespace and comments.