JS & CSS Minifier
Compress JavaScript and CSS before deployment. Paste code or drop files, remove comments and unnecessary whitespace, compare size savings, then copy or download .min files.
Drop JS or CSS files
Batch minify files locally, then download individual outputs or a ZIP package.
This is a deployment helper, not a security feature. Minification reduces file size; it does not protect secrets or prevent code review.
Paste code
Output
Summary
No files selected yet.
Batch results
| File | Mode | Original | Minified | Saved | Download |
|---|---|---|---|---|---|
| No files minified yet. | |||||
How to use this minifier
- Paste code or drop .js and .css files into the tool.
- Choose automatic detection or force JavaScript/CSS mode.
- Run minify and compare original versus output size.
- Copy the result, download one file, or export a ZIP batch.
Best use cases
Use this before deploying small static sites, landing pages, widgets, theme files, or browser tools. It is helpful when you want a smaller .min.js or .min.css file without sending source code to a remote AI chat.
Privacy and limits
Processing happens in the current browser session. This lightweight minifier removes comments and whitespace conservatively; it is not a full JavaScript parser, bundler, optimizer, or obfuscator. Test the minified file before production use.
FAQ
Is this the same as obfuscation?
No. Minification reduces file size by removing comments and extra whitespace. Obfuscation tries to make code harder to read, but it can break projects and is not real security.
Can minification break JavaScript?
Any code transform can break unusual code. This tool uses conservative rules and does not rename variables, but you should still test the output in your browser or build pipeline.
Should I put secrets in client-side JavaScript?
No. Minification does not hide API keys, passwords, tokens, or private logic. Anything shipped to the browser can be inspected by users.
Why keep /*! comments?
Some projects keep license banners in minified files. Leave the option enabled when a dependency or license requires attribution in distributed code.