JavaScript Minifier

JavaScript Minifier is a free online tool to minify your JavaScript source code. It removes unnecessary or redundant JavaScript code without affecting the functionality of the source code. It can reduce the size of the JS file by 20-90%.

JavaScript Input

Display warning messages

Optimize sequences

Optimize property access

Optimize if-s and conditional expressions

Optimize if/return and if/continue expressions

Optimize boolean context

Optimize loops

Remove unreachable code

Remove unreferenced functions and variables

Remove debugger; statements Remove debugger; statements

Evaluate constant expressions

Join consecutive var statements

Cascade

Hoist function declarations

Apply unsafe transformations

Apply more unsafe optimizations

Compressed JavaScript:

Input
Output
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Minify CSS with CSS Minifier