Reduce your JavaScript and TypeScript file sizes and improve website performance with our free online minifier. Remove unnecessary whitespace, comments, and formatting to optimize your scripts for production.
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Tip
Always keep your original source files; minified code is intended for production use only.
Did You Know?
Minification can reduce script file sizes by up to 70% before additional server-side compression.
JavaScript is the core programming language of the web, enabling interactive features on almost every website. TypeScript is a strongly typed superset of JavaScript that compiles to plain JavaScript, helping developers catch errors early. Minification is essential for both languages because browsers do not need human-readable formatting to execute code; removing it simply makes the delivery process more efficient.
Best Practice
Use source maps to map minified production errors back to your original source code.
Q: Does minification change how my code runs? A: No, it only removes formatting and comments; the underlying logic remains exactly the same.
Q: Can I minify TypeScript files directly? A: Yes, this tool can handle TypeScript syntax and will produce a minified JavaScript output.
Q: Is it possible to reverse minification? A: While you can reformat the code using a beautifier, original variable names (if mangled) and comments cannot be recovered.
Q: Should I minify code during development? A: No, you should keep your code readable during development and only minify it for the production build.