# Slumber

> Automatically suspends inactive tabs to save computer memory

Canonical page: [https://chrome-stats.com/d/slumber-tabs](https://chrome-stats.com/d/slumber-tabs)

## Overview

- **ID:** `slumber-tabs`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Sco0byDoo
- **Category:** appearance,tabs
- **Daily users:** 23
- **Weekly downloads:** 1
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 1.1.0
- **Last updated:** 2026-02-24
- **First published:** 2025-10-16
- **Size:** 61 KB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/slumber-tabs/)

## Description

Slumber automatically puts inactive browser tabs to sleep, freeing up system memory and improving browser performance. Customize sleep timeout (5-120 minutes or custom), exclude pinned tabs, tabs with audio, and specific URLs. Wake tabs instantly with one click. Perfect for users with many open tabs who want to reduce memory usage without losing their browsing session. All data stored locally - no tracking or external servers.

## Rankings

- #23,022 — Overall
- #2 — plumbers
- #63 — number
- #202 — memory

## Permissions and access

### Permissions

- `tabs`
- `storage`
- `alarms`
- `notifications`

### Content script matches

- `<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

- [Lazy Tabs (Tab Suspender)](https://chrome-stats.com/d/lazy-tabs-tab-suspender) — 3 users, 5.00 / 5
- [SleepyTabs - Tab Suspender & Manager](https://chrome-stats.com/d/sleepy-tabs) — 2,052 users, 4.65 / 5
- [Tab Optimizer](https://chrome-stats.com/d/tab-optimizer) — 166 users, 3.00 / 5
- [Smart Tab Suspender](https://chrome-stats.com/d/smart-tabsuspender) — 41 users, 4.40 / 5
- [MemoryGuard](https://chrome-stats.com/d/memoryguard)
- [Tab Suspender – Save Memory](https://chrome-stats.com/d/tab-suspender-save-memory) — 16 users, 1.00 / 5
- [Hibernating Tabs](https://chrome-stats.com/d/hibernating-tabs) — 62 users
- [Smart Tab Suspender](https://chrome-stats.com/d/smart-tab-suspender-iue) — 2 users
- [Auto Tab Suspender](https://chrome-stats.com/d/auto-tab-suspender) — 7 users, 3.00 / 5
- [Great Suspender resources](https://chrome-stats.com/d/great-suspender-resources) — 27 users
- [Auto Suspend Tabs](https://chrome-stats.com/d/auto-suspend-tabs) — 4 users
- [Smart Tab Suspender](https://chrome-stats.com/d/smart_tab_suspender) — 2 users

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Source: [Chrome-Stats](https://chrome-stats.com/d/slumber-tabs)