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
FileEntry
@@toStringTag    
arguments    
caller    
createWriter    
file    
name    
FileEntrySync
@@toStringTag    
arguments    
caller    
createWriter    
file    
name    
FileSystem
@@toStringTag    
arguments    
caller    
name  
root  
FileSystemCallback
@@toStringTag    
arguments    
caller    
handleEvent    
name    
FileSystemSync
@@toStringTag    
arguments    
caller    
name    
root    
FileWriterCallback
@@toStringTag    
arguments    
caller    
handleEvent    
name    
Metadata
@@toStringTag    
arguments    
caller    
modificationTime    
name    
size    
MetadataCallback
@@toStringTag    
arguments    
caller    
handleEvent    
name    
VoidCallback
@@toStringTag    
arguments    
caller    
handleEvent    
name    
Window
@@iterator    
@@toStringTag   
arguments   
caller   
PERSISTENT   
requestFileSystem    
resolveLocalFileSystemURL    
TEMPORARY