SCSS (Sassy CSS) is a CSS preprocessor that adds variables, nesting, mixins, functions, and control flow to plain CSS. SCSS files (.scss) compile to standard CSS via Dart Sass. SCSS is a strict superset of CSS — every valid CSS file is also valid SCSS.

What is the difference between SCSS, SASS, and Less?

SCSS uses braces like CSS ($variable, { }). SASS is the older indented syntax (no braces, whitespace-significant). Less is a different preprocessor using @variable and compiling via JavaScript. SCSS is the most popular by far.

Should I sort SCSS properties alphabetically?

Optional but useful when refactoring legacy code — easier to spot duplicates and conflicting declarations. Some teams prefer grouped order (positioning, box model, typography, visual). Pick a convention and stick to it.

Home/Dev Tools/SCSS Formatter

SCSS Formatter

Format

Format and beautify SCSS files. Fix nesting, indentation and property order.

Input

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Output

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✨ AI Code Explanation

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What Is SCSS?

SCSS (Sassy CSS) is a CSS preprocessor syntax — a superset of CSS that adds variables, nesting, mixins, functions, and modules. SCSS files (.scss) compile to plain CSS that browsers can read. SCSS uses braces and semicolons like regular CSS, making it the more popular variant compared to the indented Sass syntax. It powers Bootstrap, Bulma, and most large design systems.

SCSS Formatter Online — What This Tool Does

This free SCSS formatter beautifies .scss files entirely in your browser using Prettier's SCSS parser. It fixes inconsistent indentation, aligns nesting, spaces declarations correctly, and optionally sorts properties alphabetically. Output is production-ready SCSS that any Sass compiler can process.

How to Format SCSS Online

Paste SCSS into the Input pane, or click Upload to load a .scss file.
Choose an indent size (2, 4, or 6 spaces).
Toggle Sort props to alphabetise declarations within each rule.
Toggle No comments to strip // and /* */ comments.
Click Beautify. The formatted SCSS appears in the output pane.
Click Copy or Download to save as formatted.scss.

SCSS vs Sass vs Less — What's the Difference?

SCSS — Sassy CSS, uses { } and ;. Superset of CSS. Most popular preprocessor today.
Sass (indented) — original Sass syntax, no braces or semicolons, indentation-based. Less common now.
Less — JavaScript-based preprocessor with similar features. Used by Bootstrap 3 and ant-design.
Plain CSS — browsers natively support many preprocessor features now via custom properties, nesting (CSS Nesting Level 4), and CSS modules.

SCSS Features Preserved by the Formatter

$variables — formatted but never evaluated.
@mixin / @include — declaration and call sites stay structured.
@extend and %placeholder selectors.
@function / @return blocks.
@each, @for, @while, @if control directives.
Selector nesting and & parent references.
@use / @forward module imports.

Tips & Tricks

2-space indent is the Bootstrap and Bulma convention — pick this for compatibility with major design systems.
Sort props alphabetically if you're refactoring legacy SCSS — easier to diff and review.
Keep comments during code review — only strip them before deploying or shipping a final design system.
Format before compiling — clean SCSS produces cleaner CSS output and easier source maps.
Pair with SCSS to CSS Converter — see exactly what your formatted SCSS compiles to.

Related Tools

SCSS Minifier — minify SCSS for production deployment.
SCSS to CSS — compile SCSS to plain CSS.
CSS to SCSS — convert plain CSS back to SCSS.
CSS Formatter — format plain CSS without preprocessor syntax.
Less Formatter — format Less stylesheets (alternative preprocessor).

Is My Code Sent to a Server?

No. SCSS formatting runs entirely in your browser using Prettier. Your stylesheet — including any proprietary design system tokens or brand colours — never leaves your machine.