CSS Beautifier

What this tool does

This tool formats CSS. You paste a stylesheet that is minified, badly indented, or just inconsistent, and it returns the same CSS rewritten cleanly: one declaration per line, braces in predictable places, and the indentation you chose applied throughout. It is a pretty-printer for stylesheets — the opposite of a minifier. The formatting happens entirely inside your browser, so the CSS you paste is never uploaded anywhere.

Why you might need it

CSS reaches you in all kinds of shapes. Production stylesheets are minified into a single dense line to save bytes. Code copied from a browser’s developer tools arrives with odd spacing. Stylesheets edited by several people drift into inconsistent indentation. In every case the CSS still works, but it is painful to read and risky to edit — it is easy to miss a missing semicolon or a stray brace. Beautifying gives you a consistent, scannable layout so you can find the rule you need, understand the cascade, and make a change with confidence.

How to use it

1. Paste your CSS into the input box — minified, messy, or partial all work.
2. Choose your indentation: 2 spaces, 4 spaces, or a tab.
3. Click Beautify CSS, or press Ctrl/Cmd + Enter.
4. Read the formatted result in the output box.
5. Copy it with one click and paste it back into your project.

The character counters under each box show the before-and-after size. The formatted version is larger — that extra weight is the whitespace that makes it readable, and you would minify it again before shipping to production.

Common pitfalls

Beautifying is not the same as validating. This tool reformats whatever you give it; it does not check that a property name is real or that a value is legal. If a rule does not behave after formatting, the problem was already in the CSS — the beautifier just made it easier to see. Another thing to expect: comments are preserved, including their position, so a comment that was mid-rule stays mid-rule. Finally, if you paste something that is not CSS at all, the output may look strange because the formatter still tries to apply CSS spacing rules to it; double-check that you pasted a stylesheet.

Tips and advanced use

Match the indentation setting to your project so the formatted output drops in without creating noisy diffs — many teams standardise on two spaces. When you are debugging a stylesheet pulled from a live site, beautify it first: a one-line production file becomes navigable, and you can spot the exact rule that is causing trouble. Beautifying is also a good first step before a code review, since a consistently formatted diff is far easier for a reviewer to read. And because the whole process is client-side, you can safely format the stylesheet of an internal tool or an unreleased product without sending any of it to a third-party server.