# TabNap - Smart Tab Suspension

> Save memory by automatically suspending inactive tabs. Lightweight, privacy-focused, with zombie detection and multi-language support.

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

## Overview

- **ID:** `tabnap`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** bysismo
- **Category:** privacy-security,appearance,tabs
- **Daily users:** 6
- **Rating:** 5.00 / 5 (2 ratings)
- **Version:** 2.1.2
- **Last updated:** 2026-07-15
- **First published:** 2026-07-11
- **Size:** 817 KB
- **Data as of:** 2026-09-04
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/tabnap/)
- **Website:** [https://github.com/bysismo](https://github.com/bysismo)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/tabnap/privacy/](https://addons.mozilla.org/firefox/addon/tabnap/privacy/)

## Description

TabNap is a lightweight, privacy-focused Firefox extension that automatically suspends inactive tabs to free up memory and CPU resources. It helps you browse faster by managing your tabs efficiently.

<ul><li>Automatically suspends tabs after a configurable timeout (5 min to unlimited)</li><li>Supports manual suspension via toolbar button or context menu</li><li>Suspend all tabs, current tab, or tabs to the left/right</li><li>Startup suspension with configurable delay (1-10 seconds)</li><li>Tab prioritization system based on visit frequency, bookmarks, and usage patterns</li></ul>
<ul><li>Detects "zombie" tabs that consume resources despite being idle</li><li>4 protection modes: Low, Medium, High, and Stealth</li><li>Automatic domain banning for resource-heavy sites (500+ requests)</li><li>Smart filter system with protected sites whitelist (YouTube, Google)</li><li>Case-insensitive domain matching for reliable filtering</li></ul>
<ul><li>Real-time tracking of tab activity and data usage</li><li>Sub-domain activity visualization with bar charts</li><li>Top consumers ranking with visual bars</li><li>Live activity ticker</li></ul>
<ul><li>Tracks memory savings with 7-day history</li><li>Daily and total savings statistics</li><li>Automatic memory usage alerts at 80%+</li></ul>
<ul><li>Save and restore tab sessions</li><li>Auto-save sessions every 5 minutes</li><li>Export/import sessions as JSON</li><li>Up to 20 saved sessions with 100 tabs each</li></ul>
<ul><li>Learns your browsing patterns over time</li><li>Tracks peak activity hours</li><li>Suggests optimal protection mode based on usage</li><li>Domain visit frequency tracking</li></ul>
<ul><li>10 languages: Turkish, English, Azerbaijani, German, French, Spanish, Russian, Chinese, Japanese, Arabic</li><li>Easy language switching from the popup</li></ul>
<ul><li>No data collection or transmission</li><li>All processing happens locally in your browser</li><li>Open source and transparent</li></ul>
<ul><li>Uses Firefox's built-in <code>tabs.discard()</code> API for efficient suspension</li><li>3 fallback suspension methods for maximum reliability</li><li>Background service worker for minimal resource usage</li><li>Context menu integration for quick actions</li><li>Custom modal dialogs (no native browser prompts)</li><li>XSS-protected DOM manipulation</li><li>Proper error handling throughout</li></ul>

## Rankings

- #40,036 — Overall
- #103 — smart
- #144 — smartbook
- #151 — smart tool
- #174 — smartphone
- #220 — spend

## Permissions and access

### Permissions

- `tabs`
- `storage`
- `alarms`
- `activeTab`
- `notifications`
- `webRequest`
- `webRequestBlocking`
- `contextMenus`
- `<all_urls>`

## Safety

- **Risk impact:** High 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 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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Source: [Chrome-Stats](https://chrome-stats.com/d/tabnap)