Bytelify

CSS Minify

Strip comments and unnecessary whitespace from CSS, live as you type.

Runs in your browser, nothing sent
css-minify
CSS Prettify
Minified — 33% smaller
.card{padding:1rem;border-radius:8px}.title{font-size:1.25rem;color:#333}

Strips comments and unnecessary whitespace live as you type. Runs entirely in your browser; nothing you type is sent anywhere.

What is CSS Minify?

Paste CSS and get it minified instantly: comments and whitespace stripped, output shrunk for production without changing what the styles do. Smaller CSS means a faster first paint, especially on a mobile connection where every kilobyte in the critical render path costs load time. Minification here runs entirely in your browser, so you can shrink a stylesheet before committing it without sending your source to a third-party service.

How to Use CSS Minify

  1. 1

    Paste the CSS: Enter any CSS, including comments and indentation.

  2. 2

    Read the Minified Result Instantly: The minified output appears automatically as you type.

  3. 3

    Copy the Result: Use the copy button to copy the minified CSS for production.

How It Works

Every CSS comment (`/* ... */`) is removed, and all formatting whitespace (indentation, blank lines, line breaks between rules) is collapsed. Redundant trailing semicolons before a closing brace are dropped. Selectors, property names, and values themselves are left untouched, so the visual result of the stylesheet is unchanged, only its byte size shrinks.

Example

Before
.card {
  /* card container */
  padding: 16px;
  border-radius: 8px;
  background: #ffffff;
}
After
.card{padding:16px;border-radius:8px;background:#ffffff}

The comment and all formatting whitespace are gone; every selector, property, and value is untouched.

Common Use Cases

  • Shrinking a hand-written stylesheet before deploying it to production, cutting the number of bytes the browser has to download before it can paint the page.

  • Preparing a small CSS snippet to inline in an email template or a `<style>` block, where every character counts toward a size limit.

FAQs

Frequently Asked Questions

Common questions about CSS Minify.

No, only comments and formatting whitespace are removed; every selector, property, and value is preserved exactly.

Yes, use the CSS Prettifier to turn minified CSS back into readable, indented code.

No, this only strips comments and formatting whitespace. Removing unused selectors ("dead code elimination") requires analyzing your HTML/JS alongside the CSS, which is a separate, more involved process this tool doesn't attempt.

Yes, Bytelify's CSS Minify tool is free with no account or sign-up required.

No. Minification runs entirely client-side in your browser, so nothing you paste is sent anywhere.