API Catalog

Visualize and analyze the API overlap between standards specifications and type systems within browsers.

Browser information was gathered by traversing the type system within the latest available version of the top browsers. Specification data was gathered by extracting Web IDL definitions from notable web specifications. Note that an API that is shown as detected does not necessarily mean it functions per specification; where the absence of an API under an interface could be due to the browser supporting an API in a different part of the prototype chain. This data is made publicly available to help each browser vendor work toward the goal of a more interoperable web platform. For more information, visit our FAQ page.

APIs by interface

API NameSpecificationsMicrosoft EdgeGoogle ChromeMozilla FirefoxApple Safari
CSSStyleDeclaration
constructor
name
prototype
scrollBehavior  
scroll-behavior   
CaretPosition
constructor   
getClientRect   
length   
name   
offset   
offsetNode   
prototype   
Document
constructor
convertPointFromNode   
convertQuadFromNode   
convertRectFromNode   
getBoxQuads   
length 
name
prototype
scrollingElement
Element
clientHeight
clientLeft
clientTop
clientWidth
constructor
convertPointFromNode   
convertQuadFromNode   
convertRectFromNode   
getBoundingClientRect
getBoxQuads   
getClientRects
length 
name
prototype
scroll  
scrollBy  
scrollHeight
scrollIntoView 
scrollLeft
scrollTo  
scrollTop
scrollWidth
HTMLElement
constructor
length 
name
offsetHeight 
offsetLeft 
offsetParent 
offsetTop 
offsetWidth 
prototype
HTMLImageElement
constructor
length 
prototype
x
y
MediaQueryList
addListener 
constructor 
length  
matches 
media 
name 
onchange   
prototype 
removeListener 
MediaQueryListEvent
constructor   
length   
matches   
media   
name   
prototype   
MouseEvent
clientX
clientY
constructor
length 
name
offsetX
offsetY
pageX  
pageY  
prototype
screenX
screenY
x 
y 
Range
constructor
getBoundingClientRect
getClientRects
length 
name
prototype