YuNetSurf HTML5 parser and tree builder with CSS3 tokenizer, parser, and selection engine.

• Parse HTML, good and bad.
• HTML5 tokeniser with SAX-style events.
• Flexible tree builder API for custom DOM implementations.
• Readily provided HTML5 parser classes convert HTML documents into DOM trees:
  • Simple DOM tree: Fast and efficient.
  • LibXml2 tree: Fully compatible with LibXml2 functions, including XPATH and LibXslt transformation.
  • XDOM tree: Feasibility study limited by XDOM restrictions.
• Fast, efficient, and low memory usage.

• Parse CSS, good and bad.
• Apply CSS rules to DOM nodes:
  • CSS2 and CSS3 selectors.
  • Handle most CSS2 as well as some CSS3 properties.
• Selector engines readily provided for
  • Simple DOM tree.
  • LibXml2 tree.
• Flexible selection API to apply CSS to custom DOM implementations.
• Fast, efficient, and low memory usage.

• Extract information from HTML documents:
  • Locate HTML elements based on their tag, attribute, or CSS properties.
  • Extract values of attributes from elements.
  • Find the n-th sibling or child element parsed data.
• Cleanup, change, or extend HTML documents:
  • Add, change, or remove attributes of elements.
  • Manipulate the inner content of elements.
  • Wrap element content inside new elements.
• Use CSS to detect hidden, highlighted, or invisible HTML fragments.
• Apply custom CSS as an HTML element filter or locator.
• Download HTML documents with linked CSSURL resources.