JavaScript 压缩器

About This Tool

Alright, so you’ve got some JavaScript. Maybe it’s your own code, maybe you grabbed it from a tutorial, or maybe you’re just tired of seeing those massive files slowing down your site. Whatever the case, you need to shrink it. That’s where a JavaScript minifier comes in. It’s not magic—it’s just smart compression. It strips out the stuff your browser doesn’t actually need: extra spaces, line breaks, comments, long variable names. All that fluff gets trimmed so your code runs faster and loads quicker. No frills, no nonsense. Just smaller files.

Key Features

• Removes comments and whitespace—because who needs “// TODO: fix this later” in production?
• Shortens variable and function names (like turning calculateTotalPrice into a), as long as it doesn’t break your code.
• Optimizes syntax where possible—turning if (x === true) into if (x), for example.
• Preserves functionality. Your app still works. It just does it with less baggage.
• Works fast. Paste, click, download. Done.
• No installation. No sign-up. No tracking. Just a tool that does one thing well.

FAQ

Will minifying break my code?
Usually not—if your code is written properly. But if you rely on variable names in error messages or use eval() in weird ways, things can get messy. Always test your minified code before pushing it live. Better safe than sorry.

Can I undo the minification?
Not really. Once it’s minified, the original formatting and names are gone. That’s why you should keep a clean, readable version of your code somewhere safe. Minify only for production, not for development.