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
SVGNumber
constructor
length 
name
prototype
value
SVGNumberList
appendItem
clear
constructor
getItem
initialize
insertItemBefore
length 
name
numberOfItems
prototype
removeItem
replaceItem
SVGPathElement
constructor
length 
name
prototype
SVGPatternElement
constructor
height
href
length 
name
patternContentUnits
patternTransform
patternUnits
preserveAspectRatio
prototype
SVG_UNIT_TYPE_OBJECTBOUNDINGBOX  
SVG_UNIT_TYPE_UNKNOWN  
SVG_UNIT_TYPE_USERSPACEONUSE  
viewBox
width
x
y
SVGPointList
appendItem
clear
constructor
getItem
initialize
insertItemBefore
length 
name
numberOfItems
prototype
removeItem
replaceItem
SVGPolygonElement
animatedPoints
constructor
length 
name
points
prototype
SVGPolylineElement
animatedPoints
constructor
length 
name
points
prototype
SVGPreserveAspectRatio
align
constructor
length 
meetOrSlice
name
prototype
SVG_MEETORSLICE_MEET
SVG_MEETORSLICE_SLICE
SVG_MEETORSLICE_UNKNOWN
SVG_PRESERVEASPECTRATIO_NONE
SVG_PRESERVEASPECTRATIO_UNKNOWN
SVG_PRESERVEASPECTRATIO_XMAXYMAX
SVG_PRESERVEASPECTRATIO_XMAXYMID
SVG_PRESERVEASPECTRATIO_XMAXYMIN
SVG_PRESERVEASPECTRATIO_XMIDYMAX
SVG_PRESERVEASPECTRATIO_XMIDYMID
SVG_PRESERVEASPECTRATIO_XMIDYMIN
SVG_PRESERVEASPECTRATIO_XMINYMAX
SVG_PRESERVEASPECTRATIO_XMINYMID
SVG_PRESERVEASPECTRATIO_XMINYMIN
SVGRadialGradientElement
constructor
cx
cy
fr  
fx
fy
length 
name
prototype
r
SVGRectElement
constructor
height
length 
name
prototype
rx
ry
width
x
y