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StorageManager

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The StorageManager interface of the Storage API provides an interface for managing persistence permissions and estimating available storage. You can get a reference to this interface using either navigator.storage or WorkerNavigator.storage.

Instance methods

StorageManager.estimate() Secure context: Returns a Promise that resolves to an object containing usage and quota numbers for your origin.
StorageManager.getDirectory() Secure context: Used to obtain a reference to a FileSystemDirectoryHandle object allowing access to a directory and its contents, stored in the origin private file system. Returns a Promise that fulfills with a FileSystemDirectoryHandle object.
StorageManager.persist() Secure context: Returns a Promise that resolves to true if the user agent is able to persist your site's storage.
StorageManager.persisted() Secure context: Returns a Promise that resolves to true if persistence has already been granted for your site's storage.

Specifications

Specification
Storage Standard # storagemanager

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`StorageManager`	55	79	57	No	42	15.2	55	55	57	42	15.2	6.0
`estimate`	61	79	57	No	48	17	61	61	57	45	17	8.0
`getDirectory`	86	86	111	No	72	15.2	109	109	111	74	15.2	21.0
`persist`	55	79	57	No	42	15.2	55	55	57	42	15.2	6.0
`persisted`	55	79	57	No	42	15.2	55	55	57	42	15.2	6.0

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https://developer.mozilla.org/en-US/docs/Web/API/StorageManager