JavaScript Minifier / Beautifier
Minify or beautify JavaScript code instantly in your browser. Remove comments and whitespace to reduce file size, or format minified code with proper indentation.
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Frequently Asked Questions
How does the JavaScript minifier work?▾
The minifier removes all comments, unnecessary whitespace, and newlines from your JavaScript code while preserving the meaning. It does not rename variables, ensuring safe output that behaves identically to the original.
Will minifying my JavaScript break it?▾
No. This tool only removes whitespace and comments. It does not rename variables, rewrite expressions, or alter logic. The minified code is functionally identical to the original.
Can I beautify minified JavaScript?▾
Yes. Paste minified JavaScript and click Beautify to add proper indentation, line breaks, and spacing. You can choose 2-space or 4-space indentation.
Is my JavaScript code sent to a server?▾
No. All minification and beautification happens entirely in your browser using client-side JavaScript. No code is ever transmitted to a server.