Developer Utility
JavaScript Minifier
Reduce comments and unnecessary whitespace conservatively without executing pasted code.
Minify JavaScript
Method
The minifier uses a lightweight character scanner that preserves quoted strings, removes ordinary line/block comments, and collapses redundant whitespace conservatively.
Worked example
A small function with comments and extra spaces is reduced to a shorter equivalent text representation without evaluating the code.
Privacy
Pasted code stays in the browser and is not executed.
Limitations
This is not a production parser-based minifier. Complex regular-expression literals, template literals, automatic-semicolon-insertion edge cases, JSX, TypeScript, or malformed source may need a professional parser-based tool.