Goanna
CSS Level 2.1 (partial support for CSS 3)
DOM Level 1 and 2 (partial support for DOM 3)
HTML4 / HTML5
JavaScript 1.8.5 (full ECMAScript 5.1 support, partial ECMAScript 6 support )
MathML
RDF
XHTML 1.0
XML 1.0
SVG 1.1
Many bitmap image formats including JPEG, GIF, PNG, APNG and WebP