JS Minifier

Minify JavaScript code to reduce bundle size and improve page load speed. Strip comments, shorten variable names, and optimize for production.

Files never leave your device Always free No server uploads No sign-up No watermarks

Processing happens on your device — nothing is uploaded.

How It Works

Paste your JavaScript

Paste your JS source code into the input panel.

See the minified output live

Unnecessary whitespace and comments are removed in real time.

Copy for production

Click Copy — the minified output is ready to use in your project.

Frequently Asked Questions

What is JS Minifier?

JS Minifier is a free, browser-based tool on TitanFile that lets you minify JavaScript code to reduce bundle size and improve page load speed. Strip comments, shorten variable names, and optimize for production. Everything runs locally on your device — no files are ever uploaded to any server.

How do I use JS Minifier?

Open the JS Minifier page, add your file or enter your data, adjust any settings, then click the action button. Your result is ready instantly — no sign-up or installation required.

Are my files private?

Yes — all processing happens entirely in your browser using JavaScript. Your files and data never leave your device and are never uploaded to any server. We cannot see your files even if we wanted to.

Does this work offline?

Once the page has loaded, JS Minifier works without an internet connection. You can install it as a PWA to your home screen for instant offline access.

Is there a file size limit?

There is no server-side limit because everything runs locally in your browser. The practical limit is your device's available memory. Most modern devices handle files up to several hundred MB without issue.

Why is this free?

TitanFile is ad-supported and passion-driven. We believe powerful tools should be accessible to everyone. JS Minifier — like every tool on TitanFile — will always be free with no paywalls, watermarks, or hidden fees.