Other
Other
AAC audio file format
Brotli Accept-Encoding/Content-Encoding
CSS Paged Media (@page)
Data URIs
EOT - Embedded OpenType fonts
FLAC audio format
HEVC/H.265 video format
HTTP Live Streaming (HLS)
HTTP/2 protocol
JPEG 2000 image format
JPEG XR image format
MP3 audio format
MPEG-4/H.264 video format
MathML
Ogg Vorbis audio format
Ogg/Theora video format
Opus
SDCH Accept-Encoding/Content-Encoding
SPDY protocol
WAI-ARIA Accessibility features
WOFF - Web Open Font Format
WOFF 2.0 - Web Open Font Format
Wav audio format
WebAssembly
WebM video format
WebP image format
WebVTT - Web Video Text Tracks
XHTML served as application/xhtml+xml
XHTML+SMIL animation
asm.js
DOM
"once" event listener option
ChildNode.remove()
Client Hints: DPR, Width, Viewport-Width
DOM manipulation convenience methods
DOMContentLoaded
DOMMatrix
Element.closest()
Element.insertAdjacentElement() & Element.insertAdjacentText()
EventTarget.addEventListener()
EventTarget.dispatchEvent
KeyboardEvent.charCode
KeyboardEvent.code
KeyboardEvent.getModifierState()
KeyboardEvent.key
KeyboardEvent.location
KeyboardEvent.which
Mutation events
Node.compareDocumentPosition()
Node.innerText
Node.textContent
Passive event listeners
Resource Hints: Lazyload
Resource Hints: dns-prefetch
Resource Hints: preconnect
Resource Hints: prefetch
Resource Hints: preload
Resource Hints: prerender
Shadow DOM v0
Shadow DOM v1
Window.devicePixelRatio
autocomplete attribute: on & off values
document.elementFromPoint()
document.head
focusin & focusout events
querySelector/querySelectorAll