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
SVGAnimatedNumber
animVal
baseVal
constructor
length 
name
prototype
SVGAnimatedNumberList
animVal
baseVal
constructor
length 
name
prototype
SVGAnimatedPreserveAspectRatio
animVal
baseVal
constructor
length 
name
prototype
SVGAnimatedRect
animVal
baseVal
constructor
length 
name
prototype
SVGAnimatedString
animVal
baseVal
constructor
length 
name
prototype
SVGAnimatedTransformList
animVal
baseVal
constructor
length 
name
prototype
SVGCircleElement
constructor
cx
cy
length 
name
prototype
r
SVGCursorElement
constructor   
href   
length   
name   
prototype   
x   
y   
SVGDefsElement
constructor
length 
name
prototype
SVGDescElement
constructor
length 
name
prototype