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.

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.

js input

lines

0 chars1 lines

minified outputREADY

lines

0 chars1 lines

Related Tools

{}CSS Minifier

Remove whitespace and comments from CSS to reduce file size.

><HTML Minifier

Remove whitespace and comments from HTML to reduce file size.

{}JSON Minify

Remove whitespace and compress JSON to a single line.

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.