Storage manager

The navigator.storage API provides information about the availability and persistence of the data that a site stores on the device, by using APIs such as the Cache API or the IndexedDB API.

Baseline Status: Achieved Widely Available on Mar 18, 2026 (Cross-browser Newly Available since Sep 18, 2023).

Desktop Browser Engine Support

Google Chrome

61

Supported

Mozilla Firefox

57

Supported

Apple Safari

17

Supported

Microsoft Edge

79

Supported

Mobile Browser Engine Support

Chrome Android

61

Firefox Android

57

Safari iOS

17

Specifications and References

Specification ↗ Feature XML ↗

MDN Browser Compat Data Keys:

api.Navigator.storage ↗ api.Permissions.permission_persistent-storage ↗ api.StorageManager ↗ api.StorageManager.estimate ↗ api.StorageManager.persist ↗ api.StorageManager.persisted ↗ api.WorkerNavigator.storage ↗