# Memory Saver Hero

> Automatically unload inactive Firefox tabs to save memory. Fully configurable, private, and open source.

Canonical page: [https://chrome-stats.com/d/memory-saver-hero](https://chrome-stats.com/d/memory-saver-hero)

## Overview

- **ID:** `memory-saver-hero`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Chris
- **Category:** tabs
- **Daily users:** 22
- **Weekly downloads:** 11
- **Version:** 0.2.0
- **Last updated:** 2026-08-25
- **First published:** 2026-08-13
- **Size:** 50 KB
- **Data as of:** 2026-09-19
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/memory-saver-hero/)
- **Website:** [https://github.com/chtisgit/firefox-memory-saver](https://github.com/chtisgit/firefox-memory-saver)

## Description

Memory Saver helps reduce Firefox’s memory usage by automatically unloading tabs you haven’t used recently. Sleeping tabs remain visible in your tab bar and reload normally when you return to them.
You remain in control of how and when tabs are unloaded.

Features:
<ul><li>Automatically unload inactive tabs after a configurable amount of time.</li><li>Choose how frequently Memory Saver checks for unused tabs.</li><li>Keep a minimum number of tabs loaded in each window.</li><li>Protect pinned tabs and tabs playing audio.</li><li>Protect specific websites and domains from being unloaded.</li><li>Manually unload eligible tabs across Firefox or only other tabs in the current window.</li><li>View all currently sleeping tabs in one convenient list.</li><li>Restore or close sleeping tabs directly from the popup.</li><li>Optionally record local foreground active-tab time with configurable retention.</li><li>Clear locally stored activity data at any time.</li><li>No advertisements, tracking, analytics, or data transmission.</li><li>No access to webpage contents.</li><li>Open-source software.</li></ul>
Memory Saver uses Firefox’s native tab-discarding functionality. It does not close sleeping tabs or remove them from your session—it simply releases their loaded content until you need them again.

Optional activity history is disabled by default. If enabled, URLs, titles, timestamps, and foreground durations are stored only in your local Firefox profile and are never transmitted anywhere.

## Rankings

- #24,052 — Overall
- #4 — ai memory
- #8 — memory
- #140 — configure
- #217 — meme

## Permissions and access

### Permissions

- `tabs`
- `alarms`
- `storage`
- `sessions`
- `menus`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** High 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 was recently updated in the past month. New updates 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

- [Smart Tab Hibernator](https://chrome-stats.com/d/smart-tab-hibernator-pro) — 5 users
- [Tab Memory Monitor](https://chrome-stats.com/d/tab-memory-monitor) — 1 users
- [Performance Manager for Firefox](https://chrome-stats.com/d/performance-manager-fx) — 1 users
- [TabFrost – Memory Saver](https://chrome-stats.com/d/tabfrost) — 3 users
- [TabFreezer](https://chrome-stats.com/d/tabfreezer) — 8 users
- [Tab Suspender – Save Memory](https://chrome-stats.com/d/tab-suspender-save-memory) — 17 users, 1.00 / 5
- [Auto Unload Tabs](https://chrome-stats.com/d/auto-unload-tabs) — 26 users, 5.00 / 5
- [MemoryGuard](https://chrome-stats.com/d/memoryguard)
- [Tab Memory Saver itst](https://chrome-stats.com/d/tab-memory-saver-itst) — 43 users
- [Tab Memory Saver](https://chrome-stats.com/d/e4ca70c2bd8d4e2a8344) — 10 users
- [Auto Tab Suspender](https://chrome-stats.com/d/auto-tab-suspender) — 7 users, 3.00 / 5
- [Tab Memory Saver](https://chrome-stats.com/d/tab-memory-saver) — 146 users

---

Source: [Chrome-Stats](https://chrome-stats.com/d/memory-saver-hero)