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Minify CSS, JavaScript, HTML and JSON Online

Paste CSS, JavaScript, HTML or JSON code to minify it: whitespace, line breaks and comments are removed, and JavaScript variable names are shortened. Size savings are shown.

🔗 Direct link sahlify.uk/en/code-minifier/

How does it work?

Type or paste your data.
The result appears instantly.
Copy or download the result.

Why use Code Minifier?

✓ 100% free, no limits, no watermark
✓ No sign-up, no install
🔒 Files processed locally: full privacy
📱 Works on desktop, tablet and mobile

Frequently asked questions

Does minifying change behavior?

No, the code works the same, it's just more compact.

Why minify?

Smaller files load faster, which improves user experience and SEO.

Can minification break my code?

Rarely; check for missing semicolons in JavaScript.

What saving can I expect?

Usually 20–50% smaller depending on comments and indentation.

Is this tool really free?

Yes, 100% free, with no sign-up, no watermark and no usage limit.

Are my files safe?

Yes. Processing happens directly in your browser: your files are never uploaded to a server or stored.

When to use it

Minifying CSS, JavaScript and HTML reduces page weight, speeds up loading (Core Web Vitals) and helps SEO, especially on mobile and slow connections.

Our tips

💡 Always keep an unminified copy of your source code.
💡 Combine minification with server-side Gzip/Brotli compression.
💡 Test the page after minifying to catch any error.