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
URL
@@toStringTag   
arguments   
caller   
constructor
hash
host
hostname
href
length
name
origin
password
pathname
port
protocol
prototype
search
searchParams
toJSON 
username
URLSearchParams
@@iterator
@@toStringTag   
append
arguments   
caller   
constructor
delete
entries
get
getAll
has
keys
length
name
prototype
set
sort
toString
values