Is the JS minifier safe for production?

The built-in minifier performs basic comment removal and whitespace collapse. For production builds use a dedicated tool like Terser or esbuild which also perform tree-shaking and mangling.

Are string literals preserved?

Yes. The minifier does not collapse whitespace inside quoted strings, template literals, or regular expressions.

How much size reduction can I expect?

Typical reduction is 20–50% depending on how heavily commented and indented the original code is. Minification alone does not apply compression — pair it with gzip for maximum savings.

Code Minifier

Minify JavaScript, CSS, and HTML by removing whitespace and comments.

$js input

lines

0 chars1 lines

$minified output[READY]

lines

0 chars1 lines

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FAQ

Is the JS minifier safe for production?: The built-in minifier performs basic comment removal and whitespace collapse. For production builds use a dedicated tool like Terser or esbuild which also perform tree-shaking and mangling.
Are string literals preserved?: Yes. The minifier does not collapse whitespace inside quoted strings, template literals, or regular expressions.
How much size reduction can I expect?: Typical reduction is 20–50% depending on how heavily commented and indented the original code is. Minification alone does not apply compression — pair it with gzip for maximum savings.

Paste JS, CSS, or HTML code and get a minified version with comments stripped and whitespace collapsed. Useful for reducing file sizes before deployment. Select the language using the tab selector. The tool runs entirely in your browser.