CSS Formatter

How to Use the Free Client-Side CSS Formatter

Paste compressed or messy CSS and this tool expands it into a readable stylesheet, with optional property sorting to impose order on every rule block.

Expanded mode puts every property on its own line, while compact mode collapses each rule to a single line. Everything is processed locally.

1. Copy your CSS code and paste it into the input area.
2. Choose expanded or compact mode, set your indentation, and optionally enable property sorting.
3. Review the validation feedback for malformed selectors, missing braces, and invalid property values.
4. Click Copy to grab the formatted CSS for your stylesheet.

When to Use the CSS Formatter

Compressed or minified stylesheets are unreadable until someone restores their structure, and this tool does exactly that in one step. It is also the standard workflow companion to a minifier: beautify the minified CSS when you need to edit it, then re-minify for production. Third-party and inherited stylesheets are another sweet spot, since code you did not write rarely follows your formatting conventions, and a quick pass makes it reviewable.

The property sorting feature is what sets this formatter apart for maintainers. Sorting declarations alphabetically within each block means you can find any property instantly, and the same ordering applied across a whole project keeps every rule block predictable. The built-in validation catches structural problems like missing braces before they cause silent styling failures downstream.

CSS Formatter Tips and Best Practices

1. Enable alphabetical sorting to keep declarations easy to find and styles consistent across all your stylesheets.
2. Develop in expanded mode for readability, then switch to compact or minified output for production.
3. Do not expect the formatter to fix invalid syntax; validate first to catch missing braces, semicolons, and bad property names.
4. Check the sorted output if you use vendor-prefixed properties, since alphabetical order can place -webkit- and -moz- rules differently from the convention of keeping them ahead of the standard property.

Why Client-Side Privacy Matters for Beautifying and Reorganizing Stylesheets Before Review

A stylesheet reveals a lot about a project: internal class naming, design decisions, brand colors, and occasionally hardcoded API endpoints or staging URLs. Sending that file to a remote beautifier exposes proprietary styling details to a third party.

This formatter runs entirely in the browser, so the raw and reformatted CSS never leave your machine. Your design system stays private while you work.