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 
length  
name 
prototype 
sourceBuffer 
MediaSource
activeSourceBuffers
addSourceBuffer
clearLiveSeekableRange  
constructor
duration
endOfStream
isTypeSupported
length 
name
onsourceclose   
onsourceended  
onsourceopen  
prototype
readyState
removeSourceBuffer
setLiveSeekableRange  
sourceBuffers
SourceBuffer
abort 
appendBuffer 
appendWindowEnd 
appendWindowStart 
audioTracks  
buffered 
constructor 
length  
mode 
name 
onabort  
onerror  
onupdate  
onupdateend  
onupdatestart  
prototype 
remove 
textTracks    
timestampOffset 
updating 
videoTracks  
SourceBufferList
constructor 
length 
name 
onaddsourcebuffer  
onremovesourcebuffer  
prototype 
TextTrack
constructor
length 
name
prototype
sourceBuffer   
URL
constructor
createObjectURL
length 
name
prototype
VideoTrack
constructor 
length  
name 
prototype 
sourceBuffer