JavaScript Minifier

JavaScript minification reduces a script by removing comments and unnecessary formatting and, where supported, shortening internal identifiers and simplifying expressions. Smaller bundles require less bandwidth and can be downloaded and parsed faster, which is valuable on script-heavy pages and slow mobile connections. Minification is a production optimization, not a substitute for removing unused code or splitting oversized bundles.

Paste or upload JavaScript, select the required options, and test the generated version before deployment. Keep source files and source maps for maintenance and debugging. Code that depends on function names, dynamic evaluation, unusual build-time placeholders, or externally referenced globals may require conservative settings, so compare behavior and automated tests after compression.