JavaScript Minifier
Quick JS minifier that strips comments and collapses whitespace. Best for trusted, simple code snippets.
JavaScript Minifier — A lightweight JavaScript minifier that strips block and line comments and collapses whitespace. Useful for one-off scripts, bookmarklets, and snippets where you want a quick size reduction without setting up a build pipeline.
Your JavaScript is processed locally and never sent over the network.
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What is javascript minifier?
A lightweight JavaScript minifier that strips block and line comments and collapses whitespace. Useful for one-off scripts, bookmarklets, and snippets where you want a quick size reduction without setting up a build pipeline.
CAUTION: This is a syntactic minifier, not a real parser. It does not understand strings, template literals, or regular expressions, so it can mangle code that contains // or /* * / inside those constructs. For production code, use Terser, esbuild, or SWC.
How to use it
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Paste your JS
A snippet, a function, or a small module.
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Read the minified output
Comments and excess whitespace are stripped.
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Copy
Grab the result for use elsewhere.
Examples
Comment stripping
Block and line comments go away.
/* greet */ const greet = (name) => {
console.log("hi", name); // say hi
}; Result: const greet = (name) => { console.log("hi", name); };
Whitespace collapse
Multiple spaces and newlines become one.
const a = 1;
Result: const a = 1;
Frequently asked questions
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