JavaScript Minifier
Compress JavaScript files by removing whitespace, comments, and shortening variable names. Runs entirely in the browser.
Minification Options
Pro Tips
About JavaScript minification
JavaScript minification removes whitespace, comments, and unnecessary characters from source code. Advanced minifiers also shorten local variable and function names, collapse constant expressions, and remove dead code paths. The result is significantly smaller files that execute identically.
For production deployments, minification is a standard step in the build pipeline. Tools like Terser, UglifyJS, and esbuild perform this transformation. This online tool provides the same capability without requiring a build setup — paste your code, get the minified output.
Frequently Asked Questions
JavaScript minification removes whitespace, comments, and shortens variable names in your JS code to reduce file size. This makes your scripts download faster without changing their behavior.
No. Minification focuses on reducing file size by removing unnecessary characters. Obfuscation deliberately makes code harder to read and reverse-engineer. This tool performs minification only.
Indirectly, yes. Smaller JavaScript files load faster, which improves page speed — a ranking factor for Google. Faster sites also provide a better user experience, reducing bounce rates.
Yes. The minifier supports modern JavaScript syntax including arrow functions, template literals, destructuring, async/await, and ES modules.
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