CSS Minifier / Beautifier

Minify or beautify CSS instantly. 100% Client-Side. Zero tracking.

CSS Input

Minified CSS Output

Input: 0 chars • 0 Bytes Output: 0 chars • 0 Bytes

🔒 PRIVACY NOTE: Your files are processed entirely within your web browser. We do not upload, store, or share your data with any servers. 100% secure and private.

How it works

Format CSS instantly into a compact production-ready form or restore readable structure without uploading anything.

Paste CSS

Paste raw stylesheet code or switch to File Upload mode to load a .css file directly from your device.

Process Instantly

Use Minify mode for compact CSS, or Beautify mode to restore readable indentation and spacing.

Copy or Download

Copy the final result or save it directly as a ready-to-use CSS file from your browser.

Frequently Asked Questions

Is this tool completely free?

Yes! File Gulp provides completely free file conversion tools with no hidden fees, no watermarks, and no registration required.

Are my files safe?

Absolutely. Unlike other converters, File Gulp uses modern WebAssembly technology to convert files directly on your device. Your files never leave your computer, ensuring maximum privacy.

Does it work on mobile devices?

Yes, our tool is fully responsive and works perfectly on smartphones and tablets, directly from your mobile browser.

Will the quality be affected?

No, we use high-quality algorithms to ensure your output files maintain the best possible quality during conversion.

Is there a file size limit?

Very large files may be limited by your device memory/browser performance. For normal image sizes, conversion is fast and seamless.

Frontend Workflow

Why minify CSS?

Minifying CSS reduces file size by removing unnecessary whitespace, comments, and line breaks. This helps speed up delivery, reduce transfer size, and keep production stylesheets compact for deployment.

Private by Design

Why process locally?

Your CSS may include design tokens, internal class naming systems, framework structure, or product code you do not want to send to a third-party service. File Gulp processes everything directly inside your browser memory.

What this tool handles well

This tool is built for fast browser-based CSS cleanup and export:

Compact output: Turn multi-line CSS into clean compressed code for deployment.
Comment control: Remove standard comments automatically while preserving /*! important */ comments.
Readable restore: Switch to Beautify mode whenever you want readable indentation again.
Copy + Download: Save the final stylesheet directly as a .css file without manual paste steps.