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
DirectoryEntry
constructor    
createReader    
getDirectory    
getFile    
length    
name    
prototype    
removeRecursively    
DirectoryEntrySync
constructor    
createReader    
getDirectory    
getFile    
length    
name    
prototype    
removeRecursively    
DirectoryReader
constructor    
length    
name    
prototype    
readEntries    
DirectoryReaderSync
constructor    
length    
name    
prototype    
readEntries    
EntriesCallback
constructor    
handleEvent    
length    
name    
prototype    
Entry
constructor    
copyTo    
filesystem    
fullPath    
getMetadata    
getParent    
isDirectory    
isFile    
length    
moveTo    
name    
prototype    
remove    
toURL    
EntryCallback
constructor    
handleEvent    
length    
name    
prototype    
EntrySync
constructor    
copyTo    
filesystem    
fullPath    
getMetadata    
getParent    
isDirectory    
isFile    
length    
moveTo    
name    
prototype    
remove    
toURL    
ErrorCallback
constructor    
handleEvent    
length    
name    
prototype    
FileCallback
constructor    
handleEvent    
length    
name    
prototype