CSS Formatter & Beautifier
Beautify CSS into clean, indented rules with one declaration per line, or minify it to strip whitespace and comments. Handles nested at-rules and runs in your browser.
CSS formatter and beautifier
This free CSS formatter turns compressed, single-line, or messy stylesheets into clean, readable rules — and minifies them back down when you are ready to ship. Paste a stylesheet from a build output, a framework, or a copy-pasted snippet and the CSS beautifier rewrites it with one selector per line, one declaration per line, consistent indentation, and a single space after every colon. Everything is processed locally in your browser, so your CSS is never uploaded.
What the CSS beautifier does
The formatter walks the stylesheet character by character while tracking string literals and /* comments */ as opaque units, so it does not get tripped up by braces or semicolons that appear inside strings or url() values. It expands each rule onto multiple lines, indents declarations by their block depth, and — importantly — indents the inner rules of nested at-rules such as @media and @supports. The result is a stylesheet whose cascade and grouping you can actually read and review.
Beautify vs. minify
Beautify mode is for authoring, debugging, and code review: seeing one declaration per line makes diffs meaningful and specificity conflicts obvious. You can pick two-space, four-space, or tab indentation. Minify mode strips comments and collapses whitespace for the smallest production payload. It is deliberately careful about where it removes spaces: it keeps the single spaces inside calc() expressions and around the combinators >, +, and ~, because removing those would change the meaning of the CSS or make it invalid. The minified output is functionally identical to the input, just smaller.
How to format CSS
Paste your stylesheet into the input box, choose beautify or minify, adjust the indent if you are beautifying, and the formatted CSS appears instantly. Click Copy to grab the result. No account, no upload, no limits beyond your browser.
When to use a CSS formatter
A CSS beautifier earns its keep in a few recurring situations. The first is inheriting a stylesheet that arrived minified or auto-generated, where every rule is crammed onto one line and the cascade is impossible to follow — beautifying restores structure so you can actually maintain it. The second is code review and version control: a stylesheet with one declaration per line produces clean, line-by-line diffs, so a reviewer can see exactly which property changed instead of squinting at a single enormous line. The third is the opposite direction — you have authored readable, well-commented CSS and now want the smallest possible file to serve to visitors, which is what minify mode delivers. Keeping both operations in one tool means you can move between the readable and the shipped form of a stylesheet without copying it through anything else.
Related developer tools
Stylesheets rarely travel alone. Pair this with the HTML Formatter to tidy the markup the styles apply to. For data formats, the JSON Formatter and XML Formatter bring the same beautify-and-minify workflow to their own syntaxes.
CSS formatter and beautifier
This free CSS formatter turns compressed, single-line, or messy stylesheets into clean, readable rules — and minifies them back down when you are ready to ship. Paste a stylesheet from a build output, a framework, or a copy-pasted snippet and the CSS beautifier rewrites it with one selector per line, one declaration per line, consistent indentation, and a single space after every colon. Everything is processed locally in your browser, so your CSS is never uploaded.
What the CSS beautifier does
The formatter walks the stylesheet character by character while tracking string literals and /* comments */ as opaque units, so it does not get tripped up by braces or semicolons that appear inside strings or url() values. It expands each rule onto multiple lines, indents declarations by their block depth, and — importantly — indents the inner rules of nested at-rules such as @media and @supports. The result is a stylesheet whose cascade and grouping you can actually read and review.
Beautify vs. minify
Beautify mode is for authoring, debugging, and code review: seeing one declaration per line makes diffs meaningful and specificity conflicts obvious. You can pick two-space, four-space, or tab indentation. Minify mode strips comments and collapses whitespace for the smallest production payload. It is deliberately careful about where it removes spaces: it keeps the single spaces inside calc() expressions and around the combinators >, +, and ~, because removing those would change the meaning of the CSS or make it invalid. The minified output is functionally identical to the input, just smaller.
How to format CSS
Paste your stylesheet into the input box, choose beautify or minify, adjust the indent if you are beautifying, and the formatted CSS appears instantly. Click Copy to grab the result. No account, no upload, no limits beyond your browser.
When to use a CSS formatter
A CSS beautifier earns its keep in a few recurring situations. The first is inheriting a stylesheet that arrived minified or auto-generated, where every rule is crammed onto one line and the cascade is impossible to follow — beautifying restores structure so you can actually maintain it. The second is code review and version control: a stylesheet with one declaration per line produces clean, line-by-line diffs, so a reviewer can see exactly which property changed instead of squinting at a single enormous line. The third is the opposite direction — you have authored readable, well-commented CSS and now want the smallest possible file to serve to visitors, which is what minify mode delivers. Keeping both operations in one tool means you can move between the readable and the shipped form of a stylesheet without copying it through anything else.
Related developer tools
Stylesheets rarely travel alone. Pair this with the HTML Formatter to tidy the markup the styles apply to. For data formats, the JSON Formatter and XML Formatter bring the same beautify-and-minify workflow to their own syntaxes.
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Frequently Asked Questions
Common questions about the CSS Formatter & Beautifier
They mean the same thing. A CSS formatter, or CSS beautifier, re-indents and expands a stylesheet so each rule and declaration is on its own line and easy to read. This tool also provides the reverse operation, minify, which compresses the CSS for production.
It should not. The minifier removes comments and unnecessary whitespace but deliberately preserves the spaces inside calc() expressions and around the >, +, and ~ combinators, because removing those would change the meaning of the CSS. The minified output is functionally identical to the input.
Yes. The formatter tracks block depth, so rules nested inside @media, @supports, and similar at-rules are indented one extra level, keeping the structure of responsive and conditional styles clear.
No. All formatting and minifying happens in your browser with JavaScript. Your stylesheet never leaves your device, so it is safe for proprietary or client code.
A single space after the colon in a declaration, such as color: red, is the conventional, readable style used by almost every CSS style guide. The formatter normalizes spacing so the whole stylesheet is consistent regardless of how it was originally written.
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ℹ️ Disclaimer
This tool is provided for informational and educational purposes only. All processing happens entirely in your browser - no data is sent to or stored on our servers. While we strive for accuracy, we make no warranties about the completeness or reliability of results. Use at your own discretion.