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
Cache
add 
addAll 
constructor 
delete 
keys 
length  
match 
matchAll 
name 
prototype 
put 
CacheStorage
constructor 
delete 
has 
keys 
length  
match 
name 
open 
prototype 
Client
constructor    
frameType    
id    
length    
name    
postMessage    
prototype    
reserved    
type    
url    
Clients
claim    
constructor    
get    
length    
matchAll    
name    
openWindow    
prototype    
ExtendableEvent
constructor    
length    
name    
prototype    
waitUntil    
ExtendableMessageEvent
constructor    
data    
lastEventId    
length    
name    
origin    
ports    
prototype    
source    
FetchEvent
client    
clientId    
constructor    
isReload    
length    
name    
preloadResponse    
prototype    
request    
reservedClientId    
respondWith    
targetClientId    
ForeignFetchEvent
constructor    
length    
name    
origin    
prototype    
request    
respondWith    
FunctionalEvent
constructor    
length    
name    
prototype    
HTMLLinkElement
constructor
length 
name
prototype
scope   
useCache    
workerType