Is this a full compiler like Terser?

No, it only removes comments and collapses whitespace — it does not rename variables or tree-shake.

Is it safe for production code?

Test thoroughly first; complex syntax like template literals with embedded code should be reviewed.

Can I download the result?

Yes, use the Download button on the output panel.

JS/CSS Minifier

Conservatively strip comments and whitespace from JS or CSS.

Works Offline

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No API

Language

This is a conservative, comment/whitespace-stripping minifier — not a full compiler. It does not rename variables, tree-shake, or handle every edge case of complex syntax. Always test minified output before shipping it.

Original

Minified

function greet(name) {
console.log('Hello, ' + name);
}

Before

74 B

After

55 B

Saved

26%

About the JS/CSS Minifier

A conservative minifier that strips comments and collapses whitespace in JavaScript or CSS, showing before/after byte size stats. It is not a full compiler — it does not rename variables or restructure code.

Examples

Minify CSS

body {
  color: red;
}

Output

body{color:red}

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Frequently asked questions

Version 1.0.0 · Updated 2026-08-06 · Runs entirely in your browser