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
AudioTrack
constructor 
enabled 
id 
kind 
label 
language 
length  
name 
prototype 
AudioTrackList
constructor 
getTrackById 
length 
name 
onaddtrack 
onchange 
onremovetrack 
prototype 
BarProp
constructor
length 
name
prototype
visible
BeforeUnloadEvent
constructor
length 
name
prototype
returnValue
DOMElementMap
constructor    
length    
name    
prototype    
DOMStringMap
constructor
length 
name
prototype
DataCue
constructor   
data   
length    
name   
prototype   
DataTransfer
clearData
constructor
dropEffect
effectAllowed
files
getData
items 
length 
name
prototype
setData
setDragImage 
types
DataTransferItem
constructor 
getAsFile 
getAsString 
kind 
length  
name 
prototype 
type 
DataTransferItemList
add 
clear 
constructor 
length 
name 
prototype 
remove