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
CanvasGradient
addColorStop
constructor
length 
name
prototype
CanvasPattern
constructor
length 
name
prototype
CanvasRenderingContext2D
addHitRegion   
canvas
clearHitRegions   
constructor
length 
name
prototype
removeHitRegion   
ImageData
constructor
data 
height
length 
name
prototype
width
MouseEvent
constructor
length 
name
prototype
region  
TextMetrics
constructor
length 
name
prototype
width