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
Headers
append
constructor
delete
entries 
get
has
keys 
length 
name
prototype
set
values 
Request
arrayBuffer
blob
bodyUsed
cache 
clone
constructor
credentials
destination  
formData  
headers
integrity
json
keepalive   
length 
method
mode
name
prototype
redirect
referrer
referrerPolicy
text
type  
url
Response
arrayBuffer
blob
body 
bodyUsed
clone
constructor
error 
formData  
headers
json
length 
name
ok
prototype
redirect 
redirected 
status
statusText
text
trailer    
type
url