Compress, mangle, and minify JavaScript files instantly to reduce file size and boost loading speed.
What we do
Our tool uses the industry-standard Terser engine to deeply parse your code, removing all comments, spaces, and line breaks to create the smallest possible file size.
To save even more space, our engine automatically "mangles" your code by safely renaming long variables and functions into single letters (like changing var options to var t).
Watch your savings in real-time. Our built-in Byte Calculator automatically compares your raw JavaScript file to the minified output and shows you exactly how much space you saved.
Don't want to copy and paste? Click the "Load .js" button to instantly upload entire script documents directly from your computer and compress them in milliseconds.
We integrated the premium CodeMirror engine to provide real-time JavaScript syntax coloring and active highlighting, making it easier to review your raw code before compression.
Your proprietary scripts and logic are completely safe. Even though we use an advanced parsing engine, the entire minification process still runs securely on your local device.