Sass parser in JavaScript. Have a look at the Interactive Playground to play around with compiling SCSS to CSS in your browser.

This is a convenience API for emscripted libsass (at v3.5.5). If you're looking to run Sass in node, you're probably looking for node-sass. Sass.js and node-sass should generate the same results.

A fair warning: minified the worker weighs 3.5MB, gzipped it's still 750KB. If you're on NodeJS, please use the (considerably faster) node-sass instead.

You may also be interested in giving Dart Sass a shot.

• Getting started
• API documentation
• Building Sass.js
• Changelog

Sass.js is used in the following tools:

• grunt-contrib-sassjs
• mobilexag/plugin-sass is a SystemJS plugin
• kevcjones/plugin-scss is a SystemJS plugin
• theefer/plugin-sass is a SystemJS plugin
• stealjs/steal-sass is a StealJS plugin
• nickheiner/sassjs-loader is a Webpack plugin
• lein-sass is a minimum dependency Clojure library designed to compile SASS files using Sass.js running on Nashorn
• qwebs is a "back-end web server"
• Crunch 2

• Christian Kruse - @cjk101010
• Sebastian Golasch - @asciidisco
• Rodney Rehm - @rodneyrehm

• the sass group, especially team libsass
• team emscripten, especially Alon Zakai
• Piotr Paczkowski for providing the emscripten docker image

Sass.js is - as libsass and emscripten are - published under the MIT License.