JS Minifier
Basic JavaScript minification — removes comments and collapses whitespace.
Examples
See what this tool can do.
Quickly shrink a snippet
Trim comments and spacing from a small script.
Tidy before pasting
Compact a short script to embed in a page.
Tips & tricks
Get the most out of it.
- 1Keep the original readable source for editing.
- 2Use a real build tool for anything shipping to production.
- 3Test the minified script before relying on it.
About JS Minifier
What this tool does
JS Minifier performs basic JavaScript minification — removing comments and collapsing whitespace to reduce file size.
How to use it
- Paste your JavaScript.
- Minify it.
- Copy the smaller output.
How it works
The tool strips comments and unnecessary whitespace. It is a lightweight, whitespace-level minifier — not a full compiler that renames variables or removes dead code.
Important considerations
- For production builds, use a dedicated bundler/minifier (esbuild, Terser) that safely parses the code.
- Always test minified output; regex-based minification can't guarantee every edge case.
Privacy
This tool runs entirely in your browser. The text, HTML or settings you enter are processed locally and never uploaded to a server.
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Frequently asked questions
No. It's a lightweight whitespace/comment remover for quick use. For production, use a proper bundler that parses the code safely.