JavaScript Minifier & Beautifier
Minify JS for production or beautify compressed code. Safe minification: comments and whitespace removal. 100% client-side.
Frequently Asked Questions
What does JavaScript minification do?
JS minification removes whitespace, comments, and shortens code without changing functionality. This reduces file size by 30-70%, making scripts load faster. Production websites should always serve minified JavaScript.
Will minification break my JavaScript?
Basic minification (whitespace and comment removal) is safe. Advanced minification like variable renaming can break code if not done carefully. This tool focuses on safe minification: removing comments, whitespace, and unnecessary semicolons.
Is my code sent to a server?
No. Everything runs 100% in your browser. Your JavaScript code never leaves your device.
Should I use this instead of webpack/terser?
For production builds, use your bundler (webpack, Vite, esbuild) which does more advanced minification including tree-shaking and variable renaming. This tool is great for one-off scripts, snippets, inline JS, or when you do not have a build pipeline.
What is the difference between minify and uglify?
Minification removes whitespace and comments. Uglification goes further by renaming variables to shorter names (a, b, c), mangling function names, and performing dead code elimination. Uglified code is smaller but completely unreadable. This tool does minification only (safe, reversible with beautify).
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