# ri > Nokogiri::HTML4

## [Nokogiri::HTML4](https://www.chedong.com/phpMan.php/perldoc/Nokogiri%3A%3AHTML4/markdown)

(from /home/chedong/.local/share/rdoc)
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Since v1.12.0

💡 Before v1.12.0, [Nokogiri::HTML4](https://www.chedong.com/phpMan.php/perldoc/Nokogiri%3A%3AHTML4/markdown) did not exist, and [Nokogiri::HTML](https://www.chedong.com/phpMan.php/perldoc/Nokogiri%3A%3AHTML/markdown) was
the module/namespace for parsing HTML.









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## Constants:

NamedCharacters:
  Instance of [Nokogiri::HTML4::EntityLookup](https://www.chedong.com/phpMan.php/perldoc/Nokogiri%3A%3AHTML4%3A%3AEntityLookup/markdown)


## Class methods:

  fragment
  parse