JavaScript Minifier

About This Tool

So, you’ve got some JavaScript code. It works. It’s probably a bit bloated, though. Comments everywhere, extra spaces, long variable names—maybe even some debug logs you forgot to remove. That’s where a JavaScript minifier comes in. It’s not magic, but it’s close. This tool takes your readable, developer-friendly code and crunches it down into something smaller, faster, and uglier. The goal? Make it load quicker in the browser without breaking anything. Think of it like packing for a trip: you’re not throwing stuff away, just folding it tighter so it fits in the overhead bin. No fluff. No extra features you’ll never use. Just strip the fat and ship the lean.

Key Features

• Whitespace removal – Gets rid of unnecessary spaces, tabs, and line breaks. Your code doesn’t need to breathe that much.
• Comment stripping – Bye-bye, TODOs and rants about legacy code. They’re helpful to you, not the browser.
• Variable name shortening – Turns userAuthenticationToken into a. It’s confusing to read, but the browser doesn’t care.
• Dead code elimination – Removes code that’s never executed. Why ship what you don’t use?
• Safe transformations – Avoids breaking things like eval() or with statements. Some shortcuts aren’t worth the risk.
• Source map support – Lets you debug the original code even after minification. Because we’re not monsters.

FAQ

Will minifying break my code?
Most of the time, no. But if you’re doing weird stuff with strings that look like code (like eval("var x = 1;")), it might trip up. Always test after minifying. Don’t deploy blindly.

Is minified code still readable?
Not really. That’s the point. It’s meant for machines, not humans. Keep your original source. Use source maps if you need to debug. Never edit the minified version directly—your future self will hate you.