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
HTMLMediaElement
constructor
length 
mediaKeys 
name
onencrypted 
onwaitingforkey  
prototype
setMediaKeys 
MediaEncryptedEvent
constructor 
initData 
initDataType 
length  
name 
prototype 
MediaKeyMessageEvent
constructor 
length  
message 
messageType 
name 
prototype 
MediaKeySession
close 
closed 
constructor 
expiration 
generateRequest 
keyStatuses 
length  
load 
name 
onkeystatuseschange  
onmessage  
prototype 
remove 
sessionId 
update 
MediaKeyStatusMap
constructor 
entries  
get 
has 
keys  
length  
name 
prototype 
size 
values  
MediaKeySystemAccess
constructor 
createMediaKeys 
getConfiguration 
keySystem 
length  
name 
prototype 
MediaKeys
constructor 
createSession 
length  
name 
prototype 
setServerCertificate 
Navigator
constructor
length 
name
prototype
requestMediaKeySystemAccess