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---
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
---
{{securecontext_header}}{{SeeCompatTable}}{{APIRef("Storage")}}
The **`StorageManager`** interface of the the [Storage API](/en-US/docs/Web/API/Storage_API) 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")}}.
## Methods
- {{domxref("StorageManager.estimate()")}} {{securecontext_inline}}
- : Returns a {{domxref("StorageEstimate")}} object containing usage and quota numbers for your origin.
- {{domxref("StorageManager.persist()")}} {{securecontext_inline}}
- : Returns a {{jsxref('Promise')}} that resolves to `true` if the user agent is able to persist your site's storage.
- {{domxref("StorageManager.persisted()")}} {{securecontext_inline}}
- : Returns a {{jsxref('Promise')}} that resolves to `true` if persistence has already been granted for your site's storage.
## Specifications
| Specification | Status | Comment |
| ---------------------------------------------------------------------------- | ---------------------------- | ------------------- |
| {{SpecName('Storage','#storagemanager','StorageManger')}} | {{Spec2('Storage')}} | Initial definition. |
## Browser compatibility
{{Compat("api.StorageManager")}}
|
