JSPM

Data-driven CSS framework codegen, transpiler & bundler

Lass language transpiler core

Transpiler for CSSX syntax

LitElement code transpiler (import css and scss file and inline to your component also transpile decorators to native javascript)

CSSX transpiler

an in-place transpiler for scss files

Tool for transforming styles with JS plugins

CSS transpiler for ts-mini

Sass to Scss transpiler for Broccoli

A typesafe CSS transpiler

Optimize polymer 2 components with cssclean and babel transpiler

Strict TypeScript and Flow types for style based on MDN data

A JavaScript text diff implementation.

Open Web data by the Mozilla Developer Network

A tool set for CSS: fast detailed parser (CSS → AST), walker (AST traversal), generator (AST → CSS) and lexer (validation and matching) based on specs and browser implementations

A JavaScript library for escaping CSS strings and identifiers while generating the shortest possible ASCII-only output.

Parse CSS and add vendor prefixes to CSS rules using values from the Can I Use website

a CSS selector compiler/engine

Color conversion and manipulation with CSS string support

Parser and generator for CSS color strings

A react component toolset for managing animations

tiny modular DOM lib for ie9+

A robust polyfill for the `CSS.escape` utility method as defined in CSSOM.

Parses and compiles CSS nth-checks to highly optimized functions.

Convert a kebab-cased CSS property into a camelCased DOM property.

Merge Tailwind CSS classes without style conflicts

PostCSS for CSS-in-JS and styles in JS objects

Algorithms to help you parse CSS from an array of tokens.

Just create a single stylesheet...

Fast CSS Selectors API Engine

Tokenize CSS

Solve CSS math expressions

PostCSS plugin to import CSS files

PostCSS plugin to unwrap nested rules like how Sass does it

Full CSS support for JSX without compromises

css loader module for webpack

Color helpers to ease transformation between formats, gamut, etc

Parse CSS color values

A modern CSS parser and stringifier with TypeScript support

Parse CSS inline style to JavaScript object.

Class Variance Authority 🧬

PostCSS plugin for CSS Modules to pass arbitrary values between your module files

CSS minifier with structural optimisations

An inline style parser.

ICSS utils for postcss ast

A well-tested CSS minifier

PostCSS loader for webpack

Parses CSS inline style to JavaScript object (camelCased).

A pure JavaScript implementation of Sass.

A CSS Modules transform to make local scope the default

A Tailwind CSS plugin for creating beautiful animations.

extracts CSS into separate files

A recommended babel preprocessing plugin for emotion, The Next Generation of CSS-in-JS.

Optimise inline SVG with PostCSS.

A simple utility for conditionally joining classNames together

Highly configurable, well-tested, JavaScript-based HTML minifier.

Convert values with PostCSS (e.g. ms -> s)

Generate a hex color from the given text

Discard duplicate rules in your CSS files with PostCSS.

PostCSS plugin to reduce calc()

Add necessary or remove extra charset with PostCSS

Ensure CSS selectors are unique.

Merge longhand properties into shorthand with PostCSS.

Trim whitespace inside and around CSS rules & declarations.

Discard empty rules and values with PostCSS.

Detect/remove browser hacks from CSS files.

Minify colors in your CSS files with PostCSS.

Normalize unicode-range descriptors, and can convert to wildcard ranges.

Reduce initial definitions to the actual initial value, where possible.

Ensure values are ordered consistently in your CSS.

Minify font declarations with PostCSS

👑 A tiny yet powerful tool for high-performance color manipulations and conversions

Merge CSS rules with PostCSS.

Minify selectors with PostCSS.

Minify at-rule params with PostCSS

PostCSS plugin to discard overridden @keyframes or @counter-style.

Normalize URLs with PostCSS

Color your terminal using CSS/hex color codes

Normalize wrapping quotes for CSS string literals.

Normalize keyword values for position into length values.

Sorts CSS declarations fast and automatically in a certain order.

Less/css transpiler for watchalive

Determine selector specificity with postcss-selector-parser

CSS syntax patches for CSS tree

hast utility to create an element from a simple CSS selector

Discard comments in your CSS files with PostCSS.

Minify gradient parameters with PostCSS.

A modular minifier, built on top of the PostCSS ecosystem.

Fast CSS Selectors API Engine

Fault-tolerant CSS parser for PostCSS

A list of all CSS color keywords.

List of known CSS properties

Fast, expressive styling for React.

Leaner CSS

Webpack loader that resolves relative paths in url() statements based on the original source file

Use Custom Media Queries in CSS

CSS minimizer (minifier) plugin for Webpack

Use 4 & 8 character hex color notation in CSS

A mighty CSS linter that helps you avoid errors and enforce conventions.

Use logical properties and values in CSS

PostCSS plugin to replace overflow-wrap with word-wrap or optionally retain both declarations.

Nest rules inside each other in CSS

Hyphenates a camelcased CSS property name

Use the :focus-visible pseudo-selector in CSS

Style elements relative to other elements in CSS

Use the gap, column-gap, and row-gap shorthand properties in CSS

Convert modern CSS into something browsers understand

TailwindCSS v4.0 compatible replacement for `tailwindcss-animate`.

Use a place-* shorthand for align-* and justify-* in CSS

Use Custom Properties Queries in CSS

A Less loader for webpack. Compiles Less to CSS.

Enable support for case insensitive attribute matching in selectors

Use space and slash separated color notation in CSS

PostCSS plugin to transform W3C font-variant properties to more compatible CSS (font-feature-settings)

Use double-position gradients in CSS

Display resolution-dependent images using the image-set() function in CSS

The most popular front-end framework for developing responsive, mobile first projects on the web.

Use lab() and lch() color functions in CSS

Use the :dir pseudo-class in CSS

Use the overflow shorthand in CSS

Use light and dark color schemes in all browsers

PostCSS plugin postcss-page-break to fallback `break-` properties with `page-break-` alias

A pseudo-class for matching elements in a selector list

Use the color() function in CSS

Use the ic length unit

Parse CSS media query lists.

Strip line and/or block comments from a string. Blazing fast, and works with JavaScript, Sass, CSS, Less.js, and a number of other languages.

A CSS property value parser for use with PostCSS

Use sin(), cos(), tan(), acos(), atan(), and atan2() to compute trigonometric relationships

Use Custom Selectors in CSS

Use the rebeccapurple color keyword in CSS

A list of CSS features and their positions in the process of becoming implemented web standards

Correctly declare progressive enhancements for CSS Custom Properties.

Calculate specificity of a CSS Selector

SCSS parser for PostCSS

Use the :focus-within pseudo-selector in CSS

Style form elements when they are empty

Use the :any-link pseudo-class in CSS

Use unquoted format on @font-face CSS definitions.

List of standard and browser specific CSS functions.

css color parsing, manupulation and conversion

PostCSS plugin This project tries to fix all of flexbug's issues

PostCSS plugin to transform clamp() to combination of min/max

Useful utility functions for CSS in JS solutions

Use hwb() color functions in CSS

Use cascade layers in CSS

Use two values display syntax for inner and outer display types.

Use round, rem and mod functions in CSS

Use nested calc() expressions in CSS

Use text-decoration in it's shorthand form in CSS

Using more intuitive `>=`, `<=`, `>`, `<` instead of media queries min/max prefix.

A minimal CSS module shim

Use oklab() and oklch() color functions in CSS

PostCSS plugin to fallback initial keyword.

PostCSS plugin to transform percentage-based opacity values to more compatible floating-point values.

A collection of SCSS-specific rules for Stylelint

A collection of functions for manipulating CSS colors, inspired by SASS.

Get accurate and well named css box model information about an Element 📦

Provides some base functions needed by a css-select adapter so that you don't have to implement the whole thing.

Resolve nested CSS selectors

CSS parser / stringifier

Sanitize untrusted CSS with a configuration specified by a Whitelist. 根据白名单过滤CSS

The Next Generation of CSS-in-JS.

Replacing symbols during the linking phase of ICSS

Use env() variables in CSS

A JSON Object of css color names mapped to their hex value

Parses and determines if a given CSS Media Query matches a set of values.

Highly configurable, well-tested, JavaScript-based HTML minifier.

Keep only the CSS you need based on comments and your browserslist

A best-practices CSS foundation

A cross-browser CSS foundation

Search CSS(-like) strings

Smallest 5th gen CSS-in-JS library

parse shorthand css font strings"

Use the parts of normalize.css or sanitize.css you need from your browserslist

https://github.com/deanm/css-color-parser-js

PostCSS plugin to use CSS Modules everywhere

Powerful and compliant CSS selector parser.

Robust, expressive, and feature-rich CSS superset

PostCSS plugin to keep rules and at-rules content in order.

Use flow-relative (inline-start and inline-end) values for float and clear

Use interpolation methods in CSS gradient functions

Parse CSS Cascade Layer names.

The best regular expression (regex) for matching hex color values from string.

Regex for matching HSLA colors.

Regex for matching RGBA color strings.

JSS plugin for function value and rule syntax

Use the color-mix function in CSS

List of vendor prefixes known to the web platform

Indent-based CSS syntax for PostCSS

A lib for generating Style Sheets with JavaScript.

Regex for RGB color strings.

Regex for matching HSL colors.

Inlines img, script and link tags into the same file.

Reduce CSS calc() function to the maximum

Storybook Themes addon: Switch between themes from the toolbar

Use logical overflow properties and values in CSS

Colors of Google's Material Design made available to coders

Use logical values in the resize property

Use vb and vi length units in CSS

Standalone CSS Selector Finder and Parser.

A collection of order related linting rules for Stylelint.

Parsers, transformers and tests for special value types, eg: %, hex codes etc.

CSS vendor prefix detection and property feature testing.

Generate fallback values for content with alt text

Gamut map css colors to fit display specific gamuts

Use logical overscroll behavior properties and values in CSS

A recommended babel preprocessing plugin for emotion, The Next Generation of CSS-in-JS.

CSS value parser

A simple list of CSS shorthand properties and which longhand properties they expand to

Convert any CSS unit to logical pixels ("px")

A decent CSS parser

Use the random function in CSS

Convert color string (or parseable argument) to RGBA array

Inject style tag to document head.

Framework for transforming cascading style sheets (CSS) from left-to-right (LTR) to right-to-left (RTL)

LESS parser for PostCSS

Use sign and abs functions in CSS

PostCSS syntax for parsing HTML (and HTML-like)

PostCSS plugin for Sass-like variables

JavaScript image cropper.

Mix any number of colors with the color-mix function in CSS

Change alpha value of a color string

hast utility for `querySelector`, `querySelectorAll`, and `matches`

A CSS-based selector parser for React Standard Tree (RST) traversal

Modify colors using the color-mod() function in CSS

Discard unused counter styles, keyframes and fonts.

Use the gray() color function in CSS

Extract useful information from font files

Use the alpha() function in CSS

CSS dictionary for cspell.

A Sass parser for PostCSS, using gonzales-pe.

Convert any color data to sanitized output format

Remove unused css selectors

Merge keyframe and counter style identifiers.

Convert HEX color to RGBA

Media queries in react for responsive design

Style once, use everywhere. A build system for creating cross-platform styles.

Reduce z-index values with PostCSS.

Reduce custom identifiers with PostCSS.

Zoom and pan html elements in easy way.

List of CSS font size keywords.

List of CSS system font keywords.

jassy is a runtime js to css transpiler that allows you to transform js objects into css on the fly. This allows you to do manipulations on your css in javascript!

Self-host the Inter font in a neatly bundled NPM package.

Compile and package Angular libraries in Angular Package Format (APF)

List of CSS font stretch keywords.

Plugin framework for CSS preprocessing

Raw browser/feature support data from caniuse.com

Emmet — the essential toolkit for web-developers