100% PrivateSize StatsSyntax Highlighting

How It Works

1

Paste CSS

Paste your CSS code into the input area.

2

Minify

Click Minify to remove all unnecessary characters.

3

Copy Result

Copy the compressed output with size stats.

Frequently Asked Questions

What does CSS minification do?
CSS minification removes all unnecessary characters from CSS code without changing its functionality. This includes whitespace, line breaks, comments, and redundant semicolons. The result is a smaller file that loads faster in browsers.
How much can CSS minification reduce file size?
Typical CSS minification reduces file size by 20-50%, depending on how much whitespace and comments are in the original code. Combined with gzip compression on the server, total savings can reach 70-85%.
Will minifying CSS break my styles?
No. Proper CSS minification only removes characters that have no effect on how the CSS is interpreted by browsers. All selectors, properties, and values remain exactly the same.
Is this tool the same as the CSS Formatter?
This tool uses the same engine as our CSS Formatter but is focused on minification. You can both beautify and minify CSS here. The CSS Formatter page is optimized for beautifying messy CSS.
Share:

About CSS Minifier

What this tool does

Developer and design tools include CSS generators (gradients, shadows, glassmorphism), code playgrounds, color pickers, responsive previews, and reference charts for HTML tags, HTTP methods, and keyboard shortcuts.

Why use this tool

Front-end development involves constant context switching between code and visual output. Having generators and references in a single browser tab speeds up prototyping and reduces the need to search through documentation sites.

How it works

Each tool provides an interactive UI: you tweak parameters (colors, radii, durations), and the tool generates the corresponding CSS, HTML, or SVG code in real time. Copy the snippet directly into your project.

Pro tip

Use the CSS variable output option when available. It makes your generated code theme-friendly and easier to maintain across a design system.

Deep Dive: Related Research

The Complete Guide to CSS in 2026

30,000 words · 65 min read

Web Performance Format Guide 2026: Images, Fonts, Scripts, and Core Web Vitals

11,500 words · 24 min read

The Complete Web Performance Guide 2026: Core Web Vitals, Bundle Analysis, Lazy Loading & Caching

30,000 words · 60 min read

Explore More

Love this tool? Explore 12467+ more

Free online tools for images, PDFs, text, code, and more. All running in your browser.

Explore All Tools