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
ServiceWorkerContainer
@@toStringTag   
arguments   
caller   
controller
getRegistration
getRegistrations
name
oncontrollerchange
onmessage
onmessageerror  
ready
register
startMessages   
ServiceWorkerGlobalScope
@@toStringTag    
arguments    
caller    
clients    
name    
onactivate    
onfetch    
oninstall    
onmessage    
onmessageerror    
registration    
skipWaiting    
ServiceWorkerRegistration
@@toStringTag   
active 
arguments   
caller   
installing 
name
navigationPreload   
onupdatefound
scope
unregister
update
updateViaCache 
waiting 
Window
@@iterator    
@@toStringTag   
arguments   
caches
caller   
WindowClient
@@toStringTag    
ancestorOrigins    
arguments    
caller    
focus    
focused    
name    
navigate    
visibilityState    
WorkerGlobalScope
@@toStringTag    
arguments    
caches    
caller    
name    
WorkerNavigator
@@toStringTag    
arguments    
caller    
name    
serviceWorker