Free online CSS formatter and beautifier. Format, beautify, indent, and sort CSS properties alphabetically or by type with configurable formatting options. Validates syntax and highlights errors. Perfect for cleaning up and standardizing stylesheets for production and team collaboration. 100% browser-based.
100% browser-based — your data never leaves your device
Format, beautify, and sort CSS properties with customizable options.
Copy your CSS code and paste it into the input area.
Select expanded or compact mode, set indentation, and optionally enable property sorting.
Click Copy to grab the formatted CSS for use in your stylesheet.
Ctrl+Enter to format
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CSS Formatter is a free online text tool that format, beautify, and sort css properties with customizable options. It works entirely in your browser — no downloads, no installations, and no server uploads required. content writers, developers, technical writers use CSS Formatter when they need a fast, privacy-respecting way to process text data without installing additional software. It supports capabilities such as property sorting, format options, validation. Additional features include copy ready. Common use cases include beautifying compressed css for editing and debugging, sorting css properties consistently across a project for maintainability, formatting inherited or third-party css for code review. All processing happens locally using modern browser APIs, which means your data never leaves your device. This makes CSS Formatter ideal for working with sensitive data, proprietary code, or any situation where privacy matters.
CSS Formatter is a free online text tool that helps you format, beautify, and sort css properties with customizable options. Key capabilities include property sorting, format options, validation. All processing is done locally in your browser — no data is uploaded, stored, or shared with any server. There are no sign-ups, no file size limits, and no hidden charges. It is commonly used to beautifying compressed css for editing and debugging.
Copy your CSS code and paste it into the input area.
Select expanded or compact mode, set indentation, and optionally enable property sorting.
Click Copy to grab the formatted CSS for use in your stylesheet.
| Category | Details |
|---|---|
| Input Limits | Maximum input length: Browser memory bound |
| Encoding support: UTF-8, UTF-16, ASCII, ISO-8859-1, Windows-1252 | |
| Supported Formats | Plain text, UTF-8, ASCII, Unicode, Percent-encoding (RFC 3986) |
| Browser Engine |
|
All operations run entirely in your browser using built-in Text APIs. No server uploads, no data storage, and no third-party requests.
CSS Formatter is ideal when you need to beautifying compressed css for editing and debugging without installing software or uploading data to a server. Since everything runs in your browser, there is no setup time and no risk of your data being stored on external servers. For for advanced text manipulation within an IDE, consider using VS Code. For for batch text processing on servers, sed/awk (command-line) may be a better fit. CSS Formatter fills the gap between heavyweight desktop tools and insecure online services that require uploading your data.
No. CSS Formatter processes everything entirely in your browser using JavaScript. Nothing you type, paste, or upload is ever transmitted to any server. Your data never leaves your device.
Expanded mode puts each property on its own line for readability. Compact mode puts all properties for a selector on a single line, separated by semicolons.
When sorting is enabled, properties within each selector block are rearranged alphabetically by property name. This helps maintain consistent styling across your stylesheets.
Sort CSS properties alphabetically or by type for consistent styling.
Expand or compact formatting with configurable indentation and line breaks.
Detects malformed selectors, missing braces, and invalid property values.
Copy formatted CSS for use in your stylesheets.
CSS Formatter is useful in a variety of scenarios across different workflows:
Beautifying compressed CSS for editing and debugging
Sorting CSS properties consistently across a project for maintainability
Formatting inherited or third-party CSS for code review
Alphabetical property sorting makes it easier to find specific declarations quickly and maintain consistent style across your stylesheets.
Keep CSS in expanded format during development for readability, then switch to compact or minified for production.
Explore more tools in the Text workspace:
Word Counter
Count words, characters, sentences, and paragraphs in your text instantly.
Character Counter
Count characters, words, sentences, and paragraphs in your text with real-time character analysis.
Slug Generator
Generate URL-friendly slugs from any text. Supports multiple separator styles.
Lorem Ipsum Generator
Generate placeholder text for your design and development projects.
URL Encode/Decode
Encode or decode URLs and query strings with proper percent-encoding.
URL Query Parser
Parse URL query parameters into a readable key-value table.