html-agility-pack.net

What It Is

Html Agility Pack (HAP) is an HTML parsing library written in C#, designed for reading and writing the HTML DOM in .NET/C# projects, with support for XPath and XSLT. It can be used both for general HTML document processing and for web data extraction in C# scenarios. The examples show that it can load HTML from files, strings, and Web URLs, then parse it through objects such as HtmlDocument and HtmlWeb.

Core Capabilities

HAP’s core capabilities fall into four areas: parsing, selection, manipulation, and traversal. For parsing, it supports From File, From String, From Web, and From Browser. For selection, it supports XPath and demonstrates the use of SelectNodes; nodes can also be filtered with LINQ/Descendants. CSS selector support is marked on the page as Coming Soon, though the text also notes that it can be enhanced with Fizzler. DOM manipulation features include AppendChild, CreateNode, InsertAfter, and PrependChild, along with reading InnerHtml and InnerText. Traversal features include ChildNodes, Descendants(), Elements(), and more.

Pricing and Ecosystem

The page clearly states that Html Agility Pack is FREE and always will be, and describes it as an open-source project. The project accepts contributions to support ongoing maintenance. The text mentions more than 3000 hours invested over the past year, along with maintenance metrics such as 3000+ requests, 500 commits, and 100 releases per year. In terms of ecosystem, it is sponsored by Entity Framework Extensions and can be used together with third-party libraries such as Fizzler and ScrapySharp.

Pros and Cons

Its strengths are that it is very straightforward for C# developers, offers clear API examples, supports XPath, XSLT, and LINQ, and covers common needs such as loading, querying, traversing, and rewriting HTML. Being free and open source also gives it strong value for money. Limitations include the lack of details in the text about NuGet installation, licensing, .NET version compatibility, and complete API documentation. Native CSS Selector support is not yet clearly finalized, and there is no official release date for v2.x.

Who It’s For and Access from China

It is suitable for .NET/C# backend developers, data scraping, content cleaning, testing tools, or developers who need to handle non-strict HTML. If a team requires full browser automation, JavaScript rendering, or anti-bot handling, the text alone does not confirm that HAP can cover those needs. The text does not provide information about access from China, nor does it mention payment details. Since the project is free, the main concerns are package source availability and access to the official website. Alternative or complementary options mentioned in the text include Fizzler and ScrapySharp.