Is gumbo-parser still maintained or safe to use?

No, the original Google repository has been unmaintained since 2016 and is not recommended for new projects. A fork exists on Codeberg, but it may also lack active development.

What are the best alternatives to gumbo-parser for HTML parsing in C/C++?

Consider actively maintained libraries like libxml2 with HTML support, or forks of gumbo-parser on Codeberg. For other languages, options include html5lib in Python or jsoup in Java.

How to build and integrate gumbo-parser into a C project?

Since it's unmaintained, you'd need to clone the source, use the provided makefiles or CMake, and link it manually. Refer to the original README for legacy instructions.

Gumbo-parser vs libxml2: which is better for HTML5 parsing?

Gumbo-parser is more strictly HTML5-compliant and lightweight, but libxml2 is actively maintained, widely used, and supports both XML and HTML, though it may have some quirks with modern HTML.

Can gumbo-parser handle UTF-8 or international text?

Yes, it fully supports UTF-8 encoded documents and text nodes, as per the HTML5 specification, making it suitable for multilingual content parsing.

How to parse malformed HTML with gumbo-parser?

It includes error recovery features that automatically correct common HTML mistakes, allowing you to extract a structured tree even from poorly formatted input.

Open-Awesome

gumbo-parser

Apache-2.0HTMLv0.10.1

A pure-C HTML5 parsing library implementing the HTML5 parsing algorithm.

GitHub

5.2k stars665 forks0 contributors

What is gumbo-parser?

Gumbo is a pure-C HTML5 parsing library that implements the W3C HTML5 parsing algorithm. It parses HTML5 documents into a structured tree representation, enabling developers to programmatically analyze and manipulate web content. The library focuses on standards compliance and correctness rather than browser-specific quirks.

Target Audience

C/C++ developers who need to parse HTML5 content in their applications, particularly those building web scrapers, document processors, or tools that analyze web content.

Value Proposition

Developers choose Gumbo for its strict adherence to the HTML5 specification, pure C implementation with no dependencies, and reliable error handling. It provides a solid foundation for HTML processing without the complexity of full browser engines.

Overview

An HTML5 parsing library in pure C99

Use Cases

Best For

Parsing HTML5 documents in C/C++ applications
Building web scraping tools that need standards-compliant HTML parsing
Implementing HTML processors or validators
Educational projects studying HTML5 parsing algorithms
Embedded systems or environments where minimal dependencies are required
Tools that need to extract structured data from HTML documents

Not Ideal For

Projects requiring ongoing maintenance, security updates, or support for post-2016 HTML standards
Modern web scrapers that need to handle JavaScript-rendered or dynamic content
Teams building production systems where dependency risks from unmaintained libraries are unacceptable
Developers seeking active community support, tutorials, or frequent updates

Pros & Cons

Pros

Standards-Compliant Parsing

Implements the full W3C HTML5 parsing algorithm, ensuring correct and predictable handling of HTML documents as per specifications.

No External Dependencies

Written in pure C99 with no external libraries required, making it highly portable and easy to integrate into C/C++ projects.

Robust Error Recovery

Gracefully handles malformed HTML with error recovery mechanisms, useful for parsing real-world, imperfect web content.

Cons

Unmaintained Since 2016

The project has seen no updates, bug fixes, or security patches for years, making it risky for long-term use.

Limited to Static HTML

Only parses static HTML5; cannot handle JavaScript execution or dynamic content rendering, limiting its utility for modern web pages.

Sparse Documentation

Relies on an old README and historical references, with no active documentation or examples for current development practices.

Frequently Asked Questions

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