JavaScript Minifier
Minify JavaScript code by removing comments and whitespace. Reduce file size for faster page loads.
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Frequently Asked Questions
How does this JavaScript minifier work?▾
It removes single-line (//) and multi-line (/* */) comments, collapses consecutive whitespace, and removes unnecessary newlines. It preserves strings and template literals.
Is this suitable for production use?▾
This is a basic minifier for quick size reduction. For production builds, use dedicated tools like Terser, esbuild, or SWC which also perform dead code elimination, tree shaking, and variable mangling.
Will it break my JavaScript code?▾
The minifier is conservative — it only removes comments and whitespace. It does not rename variables or perform advanced optimizations, so your code logic remains unchanged.
Is my code secure?▾
Yes, all processing runs in your browser. No code is sent to any server.