📦 Code Minifier
Minify HTML, CSS and JavaScript free online. Cut file size and speed up your site. Browser-based, no upload, instant results.
📦 Code Minifier
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About the Code Minifier Tool
Every byte a browser downloads costs time, and source code carries a great deal of weight that only humans need: indentation, line breaks, and comments. Stripping them typically removes 20–40% of a file with no change in behaviour.
That reduction is the cheapest performance improvement available for a static site, and it compounds with gzip compression at the server. This minifier handles HTML, CSS, and JavaScript in your browser, so proprietary source is never uploaded.
How to Use Code Minifier
- Paste your HTML, CSS, or JavaScript into the input area.
- Select the language so the correct minification rules apply.
- Press Minify and check the size reduction reported.
- Copy the minified output for production deployment.
When to Use This Tool
- Reducing page weight on a static site before deployment
- Compressing inline scripts and styles in an HTML template
- Cutting bandwidth on a high-traffic site
- Preparing assets for an environment with no build pipeline
- Shrinking embedded code in email templates or widgets
Things Worth Knowing
- Always deploy minified code and keep your formatted source in version control.
- Minified code is not obfuscated — it remains fully readable after reformatting.
- Combine minification with server-side gzip or brotli for the largest total saving.
Quick Facts
| Tool name | Code Minifier |
| Category | Developer Tools |
| Price | Free — no account, no trial, no watermark |
| Where it runs | Entirely in your browser (client-side) |
| Files uploaded | None — your data never leaves your device |
| File size limit | None imposed; limited only by device memory |
| Works offline | Yes, once the page has loaded |
| Platforms | Windows, macOS, Linux, Android, iOS |
Frequently Asked Questions
How much smaller will my files get?
Typically 20–40% before gzip, depending on how much whitespace and commenting the source contains. Heavily commented files save more.
Is minification the same as obfuscation?
No. Minification removes whitespace and comments for size. Obfuscation deliberately renames and restructures code to make it hard to understand. Use the JS Obfuscator tool if that is what you need.
Can minification break my JavaScript?
It can if the code relies on missing semicolons and automatic semicolon insertion in unusual ways. Always test minified output before deploying.
Should I minify if my server already gzips?
Yes. They work on different redundancies and combine well — minification removes characters, gzip compresses the resulting stream.