# Auto-Clear Site Data

> Finally!!! successor to \`Cookie AutoDelete\` extension |🧹 Automatically clears site data (cookies, local storage, IndexedDB, Cache, SW) when you close a site's last tab, with full support for Firefox Containers 📦 and Firefox for Android 📱.

Canonical page: [https://chrome-stats.com/d/auto-clear-site-data](https://chrome-stats.com/d/auto-clear-site-data)

## Overview

- **ID:** `auto-clear-site-data`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** byuserforuser
- **Category:** privacy-security
- **Daily users:** 128
- **Weekly downloads:** 13
- **Rating:** 3.81 / 5 (16 ratings)
- **Version:** 3.19.0
- **Last updated:** 2026-07-30
- **First published:** 2025-10-26
- **Size:** 188 KB
- **Data as of:** 2026-09-15
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/auto-clear-site-data/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/auto-clear-site-data/privacy/](https://addons.mozilla.org/firefox/addon/auto-clear-site-data/privacy/)

## Description

Auto-Clear Site Data automatically wipes cookies, localStorage, IndexedDB, cache, and service workers when you leave a site — whether you close the last tab, navigate away, or the browser discards it. Stay private and keep your storage clean without lifting a finger. 🧹

Key features include configurable delays, startup cleanup, and independent exemption rules (**Whitelist**/**Blacklist**) plus per-container rules for Firefox Containers and granular data-type controls. It’s fully local, privacy-first, and designed for performance with smart dependency tracking and deferred clearing.

## Rankings

- #10,332 — Overall
- #22 — x data
- #26 — data
- #36 — site
- #94 — learn
- #153 — auto

## Permissions and access

### Permissions

- `tabs`
- `browsingData`
- `storage`
- `contextualIdentities`
- `webNavigation`
- `webRequest`
- `alarms`
- `cookies`

### Host permissions

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

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- [Clear Website Data](https://chrome-stats.com/d/clear-website-data) — 129 users, 4.00 / 5
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- [Cleantainer](https://chrome-stats.com/d/cleantainer) — 11 users, 5.00 / 5
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- [Flush Site Data](https://chrome-stats.com/d/flush-site-data) — 107 users, 4.40 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/auto-clear-site-data)