CSS Preprocessors

Tools and languages that extend CSS with variables, mixins, functions, and other programming constructs to make styling more maintainable and efficient. These preprocessors compile into standard CSS that browsers can understand.

4 projects

6,868 contributors

$5.9M

Most contributors

Less.js

Less.js is a dynamic stylesheet language that extends CSS with dynamic behavior such as variables, mixins, operations and functions. It runs on both the client-side (browser) and server-side (with Node.js).

Contributors

3,973

Organizations

1,344

Software value

$2.1M

Autoprefixer

Autoprefixer is a PostCSS plugin that parses CSS and automatically adds vendor prefixes to CSS rules using values from Can I Use. It ensures proper browser compatibility by adding only the necessary prefixes based on current browser popularity and property support data.

Contributors

1,530

Organizations

492

Software value

$518K

Dart Sass

Dart Sass is the primary implementation of the Sass CSS preprocessor language, written in Dart. It compiles SCSS and indented syntax files to CSS, offering features like variables, nesting, mixins, and functions to enhance CSS development.

Contributors

1,365

Organizations

429

Software value

$3.3M

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