Free Tool

Free Online CSS Formatter & Beautifier

Format and beautify your CSS stylesheets in real-time. Paste any raw, minified, or messy CSS and get clean, properly indented, color-coded output. Supports modern CSS features, media queries, and nested rules. No uploads, no servers, 100% private.

Real-time FormattingSyntax HighlightingCustom IndentationMedia Query Support

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CSS FormatterFormatted

Indent:

CSS Input

:root {
  --primary-color: #2563eb;
  --secondary-color: #7c3aed;
  --text-color: #1f2937;
  --bg-color: #ffffff;
  --border-radius: 8px;
  --transition-speed: 0.3s;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, sans-serif;
  color: var(--text-color);
  background-color: var(--bg-color);
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 768px) {
  .grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

.card {
  border: 1px solid #e5e7eb;
  border-radius: var(--border-radius);
  padding: 1.5rem;
  transition: box-shadow var(--transition-speed);
}

.card:hover {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-speed);
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background-color: #1d4ed8;
}

Formatted Output

1: root {

2--primary-color: #2563eb;

3 --secondary-color: #7c3aed;

4 --text-color: #1f2937;

5 --bg-color: #ffffff;

6 --border-radius: 8px;

7 --transition-speed: 0.3s;

9}*,

10*::before,

11*::after {

12box-sizing: border-box;

13 margin: 0;

14 padding: 0;

16}body {

17font-family: system-ui,

18 -apple-system,

19 sans-serif;

20 color: var(--text-color);

21 background-color: var(--bg-color);

22 line-height: 1.6;

24}.container {

25max-width: 1200px;

26 margin: 0 auto;

27 padding: 0 1rem;

29}

30@media (min-width: 768px) {

31.grid {

32display: grid;

33 grid-template-columns: repeat(3,

34 1fr);

35 gap: 1.5rem;

37 }

38}.card {

39border: 1px solid #e5e7eb;

40 border-radius: var(--border-radius);

41 padding: 1.5rem;

42 transition: box-shadow var(--transition-speed);

44}.card: hover {

45box-shadow: 0 4px 6px -1px rgba(0,

46 0,

47 0,

48 0.1);

50}

51@keyframes fadeIn {

52from {

53opacity: 0;

54 transform: translateY(10px);

56 }to {

57opacity: 1;

58 transform: translateY(0);

60 }

61}.btn {

62display: inline-flex;

63 align-items: center;

64 gap: 0.5rem;

65 padding: 0.75rem 1.5rem;

66 border-radius: var(--border-radius);

67 font-weight: 600;

68 cursor: pointer;

69 transition: all var(--transition-speed);

71}.btn-primary {

72background-color: var(--primary-color);

73 color: white;

75}.btn-primary: hover {

76background-color: #1d4ed8;

78}

Chars: 1299Lines: 78Indent: 2 spaces

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How to Use

How to Use the CSS Formatter

Paste Your CSS

Copy your CSS code from any source — your stylesheet file, code editor, or a web page. Paste it into the input editor.

Auto-Format Instantly

The tool automatically formats your CSS with proper indentation, line breaks, and color syntax highlighting. Selectors, properties, and values are clearly distinguished.

Copy or Download

Click the copy button to copy the formatted CSS to your clipboard, or download it as a .css file. Ready to use in your project.

Features

Powerful CSS Formatting Features

Everything you need to format and beautify CSS code — all in one free tool.

⚡

Real-Time Formatting

See your CSS formatted instantly as you type or paste. No buttons to click — just paste and go.

🎨

Syntax Highlighting

Color-coded selectors, properties, values, units, and comments make your CSS easy to read and debug.

🎯

Customizable Indentation

Choose from 2 or 4 space indentation to match your project's coding conventions.

📱

Media Query Support

Properly formats @media, @keyframes, @font-face, and other at-rules with correct nesting and indentation.

📋

Copy to Clipboard

Copy formatted CSS to your clipboard with a single click. Ready to paste into your code editor.

💾

Download as File

Download your formatted CSS as a .css file. Perfect for saving updated stylesheets.

🔢

Line Numbers

Every line is numbered for easy reference. Debug faster by sharing exact line numbers.

🔒

100% Client-Side

All processing happens in your browser. Your code never leaves your device — no uploads, no servers, no privacy concerns.

Why This Tool

Why Use Our CSS Formatter

The simplest, fastest way to format CSS online. No sign-up, no limits, no data leaving your browser.

100% Free

No hidden fees, no premium plans, no usage limits. Format as many stylesheets as you need, as often as you want.

Privacy First

Your CSS code never leaves your browser. Everything is processed locally — no server uploads, no data logging.

Modern CSS Support

Handles CSS Grid, Flexbox, custom properties, nesting, @apply, and all modern CSS features with proper formatting.

Developer-Friendly

Built by developers for developers. Clean, consistent output that matches your coding style.

Key Highlights

No sign-up or registration required
Processes everything in your browser — zero server uploads
Supports @media, @keyframes, @font-face, and @import
Handles custom properties (CSS variables) and modern selectors
Works on any device — desktop, tablet, or mobile
Regularly updated with new features and improvements

FAQ

Frequently asked questions

What is a CSS formatter?

A CSS formatter (also called a CSS beautifier) takes raw, minified, or messy CSS code and reformats it with proper indentation, line breaks, and consistent structure. This makes stylesheets much easier to read, debug, and maintain.

Is this CSS formatter really free?

Yes, completely free. There are no hidden charges, no usage limits, and no premium features locked behind a paywall. Use it as much as you need, whenever you need it.

Is my CSS data secure?

Absolutely. All CSS processing happens entirely in your browser using JavaScript. Your code is never sent to any server, stored, or logged.

What CSS features are supported?

The formatter supports all modern CSS features including: selectors (class, ID, attribute, pseudo-classes, pseudo-elements), at-rules (@media, @keyframes, @font-face, @import, @supports), custom properties (--var), CSS Grid and Flexbox, nesting, and all standard property-value pairs.

Does it handle minified CSS?

Yes! Paste minified CSS and the formatter will expand it into a clean, readable structure with proper indentation and line breaks for every selector and declaration.

How does it handle media queries?

Media queries and other at-rules are formatted with their nested rules properly indented. The @media rule stays at the top level and its contents are indented one level.

Can I customize the indentation?

Yes! You can choose between 2-space or 4-space indentation using the dropdown in the toolbar.

Do I need to install anything?

No installation required. The CSS formatter works entirely in your web browser. Just open the page and start formatting. No downloads, no plugins, no setup.

Can I use this on my phone?

Yes, the tool is fully responsive and works on all devices — desktops, tablets, and smartphones.