---
title: StorageManager
slug: Web/API/StorageManager
tags:
  - API
  - Interface
  - NeedsTranslation
  - Persistence
  - Quotas
  - Reference
  - Secure context
  - Storage
  - Storage API
  - StorageManager
  - TopicStub
  - Usage
translation_of: Web/API/StorageManager
---
<p>{{securecontext_header}}{{SeeCompatTable}}{{APIRef("Storage")}}</p>

<p>The <strong><code>StorageManager</code></strong> interface of the the <a href="/en-US/docs/Web/API/Storage_API">Storage API</a> provides an interface for managing persistance permissions and estimating available storage. You can get a reference to this interface using either {{domxref("navigator.storage")}} or {{domxref("WorkerNavigator.storage")}}.</p>

<h2 id="Methods">Methods</h2>

<dl>
	<dt>{{domxref("StorageManager.estimate()")}} {{securecontext_inline}}</dt>
	<dd>Returns a {{domxref("StorageEstimate")}} object containing usage and quota numbers for your origin.</dd>
	<dt>{{domxref("StorageManager.persist()")}} {{securecontext_inline}}</dt>
	<dd>Returns a {{jsxref('Promise')}} that resolves to <code>true</code> if the user agent is able to persist your site's storage.</dd>
	<dt>{{domxref("StorageManager.persisted()")}} {{securecontext_inline}}</dt>
	<dd>Returns a {{jsxref('Promise')}} that resolves to <code>true</code> if persistence has already been granted for your site's storage.</dd>
</dl>

<h2 id="Specifications">Specifications</h2>

<table class="standard-table">
	<tbody>
		<tr>
			<th scope="col">Specification</th>
			<th scope="col">Status</th>
			<th scope="col">Comment</th>
		</tr>
		<tr>
			<td>{{SpecName('Storage','#storagemanager','StorageManger')}}</td>
			<td>{{Spec2('Storage')}}</td>
			<td>Initial definition.</td>
		</tr>
	</tbody>
</table>

<h2 id="Browser_compatibility">Browser compatibility</h2>



<p>{{Compat("api.StorageManager")}}</p>