This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The read-only filesystem property of the FileSystemEntry interface contains a FileSystem object that represents the file system on which the entry resides.


var filesystem = FileSystemEntry.filesystem;


A FileSystem representing the file system on which the file or directory described by the FileSystemEntry is located..


This example obtains a FileSystemDirectoryEntry for the root directory of the file system containing a file.

let rootDirEntry = fileEntry.filesystem.root;


Specification Status Comment
File and Directory Entries API
The definition of 'filesystem' in that specification.
Draft Initial specification.

This API has no official W3C or WHATWG specification.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support13 ?50 No No No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes ?50 No No ?

See also

Document Tags and Contributors

Contributors to this page: Sheppy
Last updated by: fscholz,