Data formatters

JavaScript Minifier

Minify JavaScript snippets locally with conservative whitespace and comment cleanup.

Runs locally in your browser

Drop a JavaScript fileLoads .js, .mjs, or text files locally into the minifier.

Choose file

JavaScript

Original104 B

Minified67 B

Saved37 chars

Minified JavaScript

function greet(name){const message=`Hello, ${name}`;return message}

This is a conservative browser-side minifier for snippets. For production bundles, keep using your build tool.

How to use this tool

Paste or type your input into the tool panel. Results update immediately where possible. For privacy-first tools, your input is processed locally in the browser and is not stored for analytics.

FAQ

Is this tool free?

Yes. Lumio Utils starts with free browser-based tools and does not require registration.

Do you store my input?

No tool inputs, file contents, passwords, or private generated outputs are stored for analytics.