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