ExCSS alternatives and similar packages

Based on the "HTML and CSS" category.
Alternatively, view ExCSS alternatives based on common mentions on social networks and blogs.

AngleSharp

9.0 8.6 L1 ExCSS VS AngleSharp

:angel: The ultimate angle brackets parser library parsing HTML5, MathML, SVG and CSS to construct a DOM based on the official W3C specifications.
HtmlAgilityPack

7.9 7.5 ExCSS VS HtmlAgilityPack

Html Agility Pack (HAP) is a free and open-source HTML parser written in C# to read/write DOM and supports plain XPATH or XSLT. It is a .NET code library that allows you to parse "out of the web" HTML files.

WorkOS - The modern identity platform for B2B SaaS

The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

Promo workos.com

CsQuery

6.9 0.0 ExCSS VS CsQuery

CsQuery is a complete CSS selector engine, HTML parser, and jQuery port for C# and .NET 4.
dotless

6.1 0.0 L2 ExCSS VS dotless

.NET Port of the ruby Less CSS lib
FluentBootstrap

4.2 0.0 L4 ExCSS VS FluentBootstrap

DISCONTINUED. Makes the Bootstrap CSS framework easier to use from ASP.NET MVC or WebPages.
LtGt

2.6 5.2 ExCSS VS LtGt

DISCONTINUED. Lightweight HTML processor
LibSass Host

2.5 6.5 L1 ExCSS VS LibSass Host

.NET wrapper around the LibSass library with the ability to support a virtual file system.
White Screen

0.7 4.1 ExCSS VS White Screen

A white screen is used to identify the dead pixel that is not visible on the screen. It can be caused by dust, dirt, or other objects that are blocking the view of the pixel.

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README

ExCSS StyleSheet Parser for .NET - It's BADA55!

ExCSS (Pronounced Excess) is a CSS 2.1 and CSS 3 parser for .NET.

The goal of ExCSS is to make it easy to read and parse stylesheets into a friendly object model with full LINQ support.

Version 4.0

Version 4 is a move forward in framework support. The new version targets the latest version of .NET; Core 3.1 and 4.8. The API surface is the same as version 3, but will target the future-facing, unified .NET version including the upcoming .NET 5. Version 3 was rewritten from the ground up; version 4 makes full use of those enhancements plus new additions under development! This is the most advanced ExCSS parser to date. The parser has been rebuild to have better white spaces support as well as the ability to handle unknown rule sets in the ever-changing web and CSS landscape.

NuGet

Version 4.0 is available on NuGet.org

Lexing and Parsing - How it all Works

ExCSS uses a Lexer and a Parser based on a CSS3-specific grammar. The Lexer and Parser read CSS text and parse each character as individual tokens run against a complex set of rules that define what CSS segment each token represents.
Once parsed, the input styles sheet is turned into a standard .NET object model. That means it's fully queryable using Linq to objects.

A basic example:

var parser = new StylesheetParser();
var stylesheet = parser.Parse(".someClass{color: red; background-image: url('/images/logo.png')");

var rule = stylesheet.Rules.First() as StyleRule;
var selector = rule.SelectorText; // Yields .someClass
var color = rule.Style.Color; // rgb(255, 0, 0)
var image = rule.Style.BackgroundImage; // url('/images/logo.png')

CSS 3 Compatible

The project has a growing suite of tests. Currently the tests account for and pass all CSS Level 3 selector definitions found in the W3 CSS 3 Release Candidate documentation