JavaScript Minifier - Optimize Your Scripts

JavaScript minification is the process of removing unnecessary characters (whitespace, comments, etc.) and optimizing code structure to reduce file size. It's important because: Reduces file size, leading to faster page load times Improves website performance and user experience Decreases bandwidth usage and server costs Enhances SEO rankings through better page speed metrics Makes code harder to read, providing basic obfuscation

No, our JavaScript minifier uses Terser, a reliable and widely-used minification engine. It preserves all functionality while optimizing code. However, we recommend testing the minified JavaScript in your development environment before deploying to production, especially when using aggressive minification settings.

Each level provides different compression: Light: Removes whitespace and comments while maintaining basic readability, no name mangling Medium: Standard minification with name mangling and code compression, removes console statements Aggressive: Maximum compression with unsafe optimizations, multiple compression passes, and advanced mangling for smallest file size

Name mangling shortens variable and function names (e.g., calculateSum becomes a) to reduce file size. It's safe for most code but can break code that relies on specific property names (like reflection or dynamic property access). You can keep class names and function names if needed for debugging or compatibility.

Yes! Our JavaScript minifier fully supports all ECMAScript versions from ES5 to ES2022, including ES6 classes, async/await, arrow functions, template literals, destructuring, spread operators, and all modern JavaScript syntax.

Yes! Enable the "Remove Console Statements" option in settings to automatically remove all console.log, console.error, and other console methods from your code. This is especially useful for production builds.

File size reduction varies depending on your JavaScript. Typically, you can expect 30-60% reduction with standard minification, and up to 70-80% with aggressive optimization settings. The actual reduction depends on factors like the amount of whitespace, comments, variable name lengths, and code structure.

Yes, the minified JavaScript is production-ready and can be used directly in your live website. However, we always recommend keeping a backup of your original JavaScript file and testing the minified version thoroughly before deploying to ensure everything works as expected.

While the tool accepts TypeScript (.ts, .tsx) and JSX (.jsx) files, it minifies them as JavaScript. For full TypeScript support, you should compile TypeScript to JavaScript first using a TypeScript compiler, then minify the resulting JavaScript. JSX files are treated as JavaScript and minified accordingly.