Nokogiri (software)

Nokogiri is an open source software library to parse HTML and XML in Ruby.^[3][4][5][6] It depends on libxml2 and libxslt to provide its functionality.^[7]

Nokogiri, an XML and HTML Parser

Original author(s)	Aaron Patterson, Mike Dalessio
Developer(s)	Aaron Patterson, Mike Dalessio, Yoko Harada, Timothy Elliott, John Shahid, Akinori MUSHA
Initial release	October 30, 2008 (2008-10-30)
Stable release	1.16.5 / May 13, 2024; 12 months ago (2024-05-13)[1]
Preview release	1.16.0.rc1 / December 13, 2023; 17 months ago (2023-12-13)[1]
Repository	github.com/sparklemotion/nokogiri
Operating system	Linux, FreeBSD, OpenBSD, Windows, macOS
Platform	Cross-platform
Available in	Ruby, Java
Type	Parser
License	MIT License[2]
Website	www.nokogiri.org

Overview

It markets itself as providing a sensible, easy-to-understand API for reading, writing, modifying, and querying documents. It is available for ruby as well as Java through JRuby. It provides fast and standards-compliant parser by relying on native parsers like libxml2 (CRuby) and xerces (JRuby).

It is one of the most downloaded Ruby gems, having been downloaded over 700 million times from the rubygems.org repository.^[8]

Features

• DOM Parser for XML, HTML4, and HTML5
• SAX Parser for XML and HTML4
• Push Parser for XML and HTML4
• Document search via XPath 1.0
• Document search via CSS3 selectors
• XSD Schema validation
• XSLT transformation
• XML and HTML Builder

Enterprise support is available through tidelift,^[9] a paid subscription model, offering commercial support for open source applications.