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

The requestPersistentQuota() property of the StorageQuota interface 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.


StorageQuota.requestPersistentQuota().then(function(storageInfo) { ... })




A reference to a StorageInfo object.


Specification Status Comment
Quota Management API
The definition of 'requestPersistentQuota()' 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: david_ross, jpmedley
Last updated by: david_ross,