---
title: browsingData.removeLocalStorage()
slug: Mozilla/Add-ons/WebExtensions/API/browsingData/removeLocalStorage
tags:
  - API
  - Add-ons
  - Extensions
  - Method
  - Reference
  - WebExtensions
  - browsingData
  - removeLocalStorage
browser-compat: webextensions.api.browsingData.removeLocalStorage
---
{{AddonSidebar()}}

Clears any [local storage](/en-US/docs/Web/API/Window/localStorage) created by websites.

You can use the `removalOptions` parameter, which is a {{WebExtAPIRef("browsingData.RemovalOptions")}} object, to:

- clear only local storage objects created after a given time
- control whether to clear only local storage objects created by normal web pages or to clear objects created by hosted apps and extensions as well.

This is an asynchronous function that returns a [`Promise`](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise).

## Syntax

```js
var removing = browser.browsingData.removeLocalStorage(
  removalOptions            // RemovalOptions object
)
```

### Parameters

- `removalOptions`
  - : `object`. A {{WebExtAPIRef("browsingData.RemovalOptions")}} object, which may be used to clear only local storage objects created by normal web pages or to clear objects created by hosted apps and extensions as well.

### Return value

A [`Promise`](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise) that will be fulfilled with no arguments when the removal has finished. If any error occurs, the promise will be rejected with an error message.

## Examples

Remove all local storage:

```js
function onRemoved() {
  console.log("removed");
}

function onError(error) {
  console.error(error);
}

browser.browsingData.removeLocalStorage({}).
then(onRemoved, onError);
```

## Browser compatibility

{{Compat}}

{{WebExtExamples}}

> **Note:** This API is based on Chromium's [`chrome.browsingData`](https://developer.chrome.com/extensions/browsingData) API.

<div class="hidden"><pre>// Copyright 2015 The Chromium Authors. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//    * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//    * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//    * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
</pre></div>
