How do I compile SCSS to CSS?

Paste your SCSS and click Compile. The tool runs Dart Sass — the reference Sass implementation — directly in your browser to expand variables, nesting, mixins, @use/@forward and functions into plain CSS. No Node, CLI or build step required.

What is the difference between SCSS and Sass syntax?

They are the same language with two syntaxes. SCSS uses braces and semicolons and is a superset of CSS (any valid CSS is valid SCSS). The indented 'Sass' syntax uses newlines and indentation instead. This page compiles the SCSS (braces) syntax; use the Sass to CSS tool for the indented syntax.

Which Sass features are supported?

Everything Dart Sass supports: variables, nested selectors, mixins (@mixin/@include), placeholder selectors (%), control flow (@if/@each/@for), the module system (@use/@forward) and built-in modules like sass:math and sass:color. Note that @import of external files is not available in-browser since there is no file system.

Is my SCSS uploaded to a server?

No. Compilation runs entirely in your browser via the Dart Sass JavaScript build. Your styles and design tokens never leave your device.

Why does darken() or lighten() warn?

Recent Dart Sass deprecates the global darken()/lighten() in favour of color.adjust() / color.scale() from the sass:color module. The tool still compiles them but you may see a deprecation warning — migrate to @use 'sass:color' for future-proof styles.

SCSS to CSS - Compile SCSS to CSS Online Free

SCSS to CSS — compile Sass in your browser

SCSS is a superset of CSS that adds variables, nesting, mixins and functions. Browsers only understand plain CSS, so SCSS must be compiled first. This tool runs Dart Sass — the canonical Sass implementation — entirely client-side, so you get reference-accurate output with no build step.

What it expands

Variables ($brand) → resolved values
Nesting & & parent selectors → flat selectors
Mixins (@mixin/@include) and control flow (@if/@each/@for)
The module system (@use, @forward) and sass:math/sass:color

Note: in-browser there is no file system, so @import/@use of external partials is unavailable — paste self-contained SCSS.

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What it expands

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