Online CSS Prettify

What is a CSS Prettify?

I built this CSS Prettify tool to turn compact or messy stylesheet code into well-structured, readable CSS. When you paste in your CSS it adds line breaks after rules and declarations and indents nested blocks. Everything runs in your browser so you can see the result instantly without installing anything.

What Does Our CSS Prettify Do?

When you click the Prettify CSS button the tool removes comments, splits declarations onto their own lines, and indents nested selectors and properties. You will see opening braces, properties, and closing braces aligned clearly. There is no server call and no dependencies, your code stays on your device.

What to Expect When Using This Tool

On load you will see two text areas labeled CSS Input and Formatted Output. On wide screens they sit side by side. On mobile devices they stack vertically for easy use. Paste your stylesheet into the left box, click Prettify CSS, and inspect the formatted result on the right. Clear All resets both fields to start fresh.

Common Use Cases

• Beautifying exported CSS from preprocessors
• Preparing code for peer review
• Cleaning up inline styles in HTML templates
• Improving readability before debugging
• Standardizing team formatting

Input and Output Examples

Example 1

Input:

.container{display:flex;margin:0 auto;padding:10px;}

Output:

.container {
  display: flex;
  margin: 0 auto;
  padding: 10px;
}

Example 2

Input:

nav ul{list-style:none;padding:0;}nav ul li{display:inline-block;margin-right:10px;}

Output:

nav ul {
  list-style: none;
  padding: 0;
}
nav ul li {
  display: inline-block;
  margin-right: 10px;
}

Frequently Asked Questions (FAQs)

What if my CSS has errors?

The tool will still insert line breaks and indentation. It does not validate syntax.

Can I use it on my phone?

Yes. The layout adapts to mobile screens seamlessly.

Does it work offline?

All formatting happens locally in your browser. No internet connection is required.

Can I customize indent size?

At this time it uses two spaces per level and cannot be changed.

Will it change selector order?

It preserves the original order of rules and selectors.

Can it handle large stylesheets?

It manages moderate-size CSS well, very large files may affect performance.

How do I copy the output?

Select the Formatted Output area and use your copy command.

Is there a minify option?

For minification use the CSS Minify tool available in this suite.

Benefits of Using Formatted CSS

• Improved readability for debugging
• Faster code reviews and collaboration
• Consistent formatting across projects
• Easier identification of nested rules
• Cleaner documentation snippets

Getting Started

1. Paste your CSS into the CSS Input box
2. Click the Prettify CSS button
3. Copy the formatted code from the Formatted Output box
4. Click Clear All to reset both fields
5. Use the beautified CSS for your project or documentation