Our free JavaScript Minifier & Compressor provides an interactive solution to compress client-side scripts, strip debugging console.log() statements, remove comments, and eliminate non-executable whitespace directly inside your browser. Designed for frontend engineers, web performance specialists, and open-source maintainers, it reduces script payload weight for faster page loads and improved PageSpeed Core Web Vitals scores. Need to inspect minified scripts? Use the built-in JavaScript Beautifier mode to format dense code into clean 2-space indented structures. All script processing runs 100% client-side in secure local JavaScript—meaning your code is never uploaded to external servers.
console.log(), console.info(), and debugging statements/* */) and line (//) comments and debugger; tokens.js files and download minified script.min.js directlyPaste your uncompressed JavaScript code into the editor, click a sample preset, or upload a local .js file.
Toggle console.log removal, comment stripping, and click 'Minify JS' or 'Beautify JS'.
Inspect the live byte reduction percentage badge, then copy the output or download script.min.js.
Collapses whitespace, strips non-executable comments, and eliminates debugging logs without breaking variable scope or function logic.
Switch seamlessly between minifying for production and beautifying dense minified scripts into readable 2-space indented code blocks.
All JavaScript parsing, comment removal, and script downloads execute locally in your browser. Proprietary script source codes are never transmitted to external servers.
JavaScript Minification strips non-functional AST tokens (block /* */ and single-line // comments, line feeds, carriage returns, and redundant spaces) from script files.
Purging development-only debugging statements (console.log(), console.warn(), debugger;) prevents memory leaks and protects internal application logic from being exposed in production console logs.
Reducing script byte weight speeds up network transport and decreases browser V8 / SpiderMonkey JavaScript engine parsing and Just-In-Time (JIT) compilation overhead.