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

The storageQuota property of the Navigator interface of the Quota Management API provides means to query and request storage usage and quota information. You can get a reference to this interface using Navigator.storageQuota.


StorageQuota.supportedTypes Read only
Returns a list of the available storage types. 


Returns a StorageInfo object containting the current data usage and available quota information for the application.
Requests persistent storage for the requesting application and returns a Promise to an instance of StorageInfo. There is no guarantee that the requested space will be granted by the user agent.


Specification Status Comment
Quota Management API
The definition of 'storageQuota' in that specification.
Obsolete Initial definition.

Browser Compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 55.0 ? ? 42 ?
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support 55.0 ? ? ? 42 ? 55.0

Document Tags and Contributors

Contributors to this page: tocretpa, Biosis, david_ross, jpmedley
Last updated by: tocretpa,