Origin private file systemBaseline · Widely available

The navigator.storage.getDirectory() method returns a FileSystemDirectoryHandle that is restricted to a specific origin and invisible to the user's actual file system for faster file-based applications, such as SQLite databases.

Supported in all major browsers for at least 30 months — safe to use without fallbacks. Baseline since Mar 27, 2023. Widely available since Sep 27, 2025.

How to use ↓Compare browsers

Browser support

DesktopChrome

1–107Not supported

108+Supportedsince Nov 29, 2022

Current: 155

Edge

12–107Not supported

108+Supportedsince Dec 5, 2022

Current: 154

Firefox

1–110Not supported

111+Supportedsince Mar 14, 2023

Current: 157

Safari

1–16.3Not supported

16.4+Supportedsince Mar 27, 2023

Current: 27

MobileChrome Android

18–108Not supported

109+Supportedsince Jan 10, 2023

Current: 155

Firefox Android

4–110Not supported

111+Supportedsince Mar 14, 2023

Current: 157

Safari iOS

1–16.3Not supported

16.4+Supportedsince Mar 27, 2023

Current: 27

How to use

This feature is Baseline widely available — use it freely, no fallback needed.

Example

Full syntax and examples are on MDN: FileSystemDirectoryHandle.

Feature detection

JS · check before using

if ("FileSystemDirectoryHandle" in globalThis) {
  // FileSystemDirectoryHandle is available
} else {
  // load a polyfill or use a fallback
}

Documentation (MDN)

Specification

fs.spec.whatwg.org#origin-private-file-system ↗

Sub-features

Support for each part of the feature (27). The overall table above shows when the whole feature works.

Sub-feature	Chrome	Edge	Firefox	Safari	Chrome Android	Firefox Android	Safari iOS
FileSystemDirectoryHandle	86	86	111	15.2	109	111	15.2
FileSystemDirectoryHandle.entries	86	86	111	15.2	109	111	15.2
FileSystemDirectoryHandle.getDirectoryHandle	86	86	111	15.2	109	111	15.2
FileSystemDirectoryHandle.getFileHandle	86	86	111	15.2	109	111	15.2
FileSystemDirectoryHandle.keys	86	86	111	15.2	109	111	15.2
FileSystemDirectoryHandle.removeEntry	86	86	111	15.2	109	111	15.2
FileSystemDirectoryHandle.resolve	86	86	111	15.2	109	111	15.2
FileSystemDirectoryHandle.values	86	86	111	15.2	109	111	15.2
FileSystemFileHandle	86	86	111	15.2	109	111	15.2
FileSystemFileHandle.createSyncAccessHandle	102	102	111	15.2	109	111	15.2
FileSystemFileHandle.getFile	86	86	111	15.2	109	111	15.2
FileSystemHandle	86	86	111	15.2	109	111	15.2
FileSystemHandle.isSameEntry	86	86	111	15.2	109	111	15.2
FileSystemHandle.kind	86	86	111	15.2	109	111	15.2
FileSystemHandle.name	86	86	111	15.2	109	111	15.2
FileSystemSyncAccessHandle	102	102	111	15.2	109	111	15.2
FileSystemSyncAccessHandle.close	102	102	111	15.2	109	111	15.2
FileSystemSyncAccessHandle.close.sync_version	108	108	111	16.4	109	111	16.4
FileSystemSyncAccessHandle.flush	102	102	111	15.2	109	111	15.2
FileSystemSyncAccessHandle.flush.sync_version	108	108	111	16.4	109	111	16.4

Show 7 more

Sub-feature	Chrome	Edge	Firefox	Safari	Chrome Android	Firefox Android	Safari iOS
FileSystemSyncAccessHandle.getSize	102	102	111	15.2	109	111	15.2
FileSystemSyncAccessHandle.getSize.sync_version	108	108	111	16.4	109	111	16.4
FileSystemSyncAccessHandle.read	102	102	111	15.2	109	111	15.2
FileSystemSyncAccessHandle.truncate	102	102	111	15.2	109	111	15.2
FileSystemSyncAccessHandle.truncate.sync_version	108	108	111	16.4	109	111	16.4
FileSystemSyncAccessHandle.write	102	102	111	15.2	109	111	15.2
StorageManager.getDirectory	86	86	111	15.2	109	111	15.2