# AdBlocker Lite

> block ads seamlessly on popular websites

Canonical page: [https://chrome-stats.com/d/adblocker-lite-firefox](https://chrome-stats.com/d/adblocker-lite-firefox)

## Overview

- **ID:** `adblocker-lite-firefox`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** AdblockLite
- **Category:** privacy-security,appearance,alerts-updates
- **Daily users:** 1,725
- **Weekly downloads:** 21
- **Rating:** 4.06 / 5 (35 ratings)
- **Version:** 0.4.7
- **Last updated:** 2026-01-27
- **First published:** 2014-10-08
- **Size:** 1.26 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/adblocker-lite-firefox/)

## Description

AdBlocker Lite is a powerful yet ultra-lightweight browser extension designed to block annoying ads seamlessly on popular websites such as Facebook, YouTube, Gmail, and Yahoo Mail. Featuring two operational modes, Lite and Full, it adapts to your device’s performance needs—Lite mode uses minimal CPU and memory with pure CSS filtering, ideal for slower machines, while Full mode blocks a wider range of ads at a higher resource cost.

Key features include blocking of ads, scripts, images, and iframes using hard-coded fast filtering rules, easy on/off toggling, highlight-only and block modes, and the ability to add custom CSS-selector based blocking rules. Users can also maintain a customizable whitelist of websites to support non-intrusive advertisements. Please note, AdBlocker Lite focuses on popular websites and doesn't block pop-ups; for comprehensive blocking, other extensions are recommended.

## Rankings

- #2,419 — Overall
- #65 — Alerts & Updates
- #17 — ad-blocking
- #17 — adblocker
- #32 — adblock
- #39 — ad

## Permissions and access

### Permissions

- `storage`
- `activeTab`
- `declarativeNetRequest`

### Content script matches

- `*`

## Safety

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

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- 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).

## Review summary

Users consistently praise AdBlocker Lite for reliably blocking ads while being lightweight and fast; its lite mode also helps bypass some anti‑adblock notices. The main complaints repeated by multiple reviewers are the limited popup UI — no per‑script details or fine‑tuning — and a need for a more informative/updated extension window.

### Pros

- Effectively blocks ads (many users report it works reliably)
- Lightweight and fast; low CPU usage and doesn’t slow the browser
- Lite mode/compatibility — can bypass some anti‑adblock notices and run where others are detected

### Cons

- Limited visibility and fine‑tuning — popup shows site and total blocked count but not individual scripts/items
- Extension popup/window/UI is sparse and needs updating to expose more controls/details

## Similar extensions and apps

- [Ad Blocker website](https://chrome-stats.com/d/ad-blocker-website)
- [u-Blocker Lite: Fast & Private Ad Blocker](https://chrome-stats.com/d/u-blocker-lite) — 2 users
- [Ad Cleaner](https://chrome-stats.com/d/adcleaner) — 6 users, 5.00 / 5
- [Ad Blocker](https://chrome-stats.com/d/ad_blocker) — 1 users
- [Adblock](https://chrome-stats.com/d/adblock-plus-plus)
- [uBlock Lite](https://chrome-stats.com/d/ublock-lite-edition) — 525 users, 4.00 / 5
- [AdBlocker Ultimate](https://chrome-stats.com/d/adblocker-ultimate) — 1,079,546 users, 4.77 / 5
- [AdBlockers](https://chrome-stats.com/d/adblockers) — 8 users
- [Ad Blocker Plus](https://chrome-stats.com/d/ad-blocker-basic) — 2 users
- [AdBlox - Ad Blocker](https://chrome-stats.com/d/adblox-ad-blocker) — 1,556 users, 3.00 / 5
- [ATO Blocker](https://chrome-stats.com/d/ato-blocker) — 1 users, 5.00 / 5
- [Block the Ad!](https://chrome-stats.com/d/block-the-ad)

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Source: [Chrome-Stats](https://chrome-stats.com/d/adblocker-lite-firefox)