Adblock Plus

One of the most popular free ad blockers for Firefox. Block annoying ads on sites like Facebook, YouTube and all other websites. Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).

Adblock Plus is one of the most popular free ad blockers for Firefox, boasting nearly 500 million downloads. This powerful extension effectively blocks annoying ads, popups, and video ads on platforms like YouTube, significantly improving your browsing experience by speeding up page loading times and reducing the risk of malware infections.

With features designed for user convenience, Adblock Plus allows you to protect your privacy by blocking trackers and can be configured to support your favorite websites by whitelisting unobtrusive ads through the Acceptable Ads initiative, promoting fair monetization for content creators. Enjoy a customizable, ad-free web experience—download Adblock Plus now!

Manifest V2
Daily users:
3,396,785+ -40,501
Version:
4.19.0 (Last updated: 2025-04-08)
Version code:
5925908
Creation date:
2006-01-17
Permissions:
  • <all_urls>
  • alarms
  • contextMenus
  • notifications
  • storage
  • tabs
  • unlimitedStorage
  • webNavigation
  • webRequest
  • webRequestBlocking
Size:
4.55M
Full description:
See detailed description
Updated:
a day ago

User reviews

Pros
  • Blocks a significant number of ads, improving the online experience
  • Provides protection against malware in ads
  • Easy to use and set up
  • Has a large number of users (5,000,000 ads blocked mentioned by multiple users)
  • Some users still find it effective on various websites
Cons
  • Does not block ads on YouTube effectively, leading to user frustration
  • Automatically disables itself on YouTube without user permission
  • Engages in aggressive prompts for donations, which some users find annoying
  • Recently updated version has performance issues, such as double loading pages or blocking zero items on websites
  • Inconsistency in ad blocking effectiveness across different websites
Most mentioned
  • Ineffectiveness on YouTube
  • Aggressive donation prompts
  • Recent performance issues
  • Functionality concerns after the last update
  • Excessive auto-disable features on YouTube
These summaries are automatically generated weekly using AI based on recent user reviews. User reviews may be inaccurate, spammy, or outdated.
User reviews
The plugin works fine overall except it randomly opens a new tab every time it updates, begging for donations. I get it, stuff costs money to make. This is a really annoying way to ask for donations though and cheapens the experience. Other ad block plugins dont do this.
by Oztaco, 2025-04-17

used this for a long old while, at the very least a decade, but now, not only with it being ineffective on youtube but also in general, there may be better alternatives out there like Ublock origin
by KevK, 2025-04-16

Im using this addon for long time already and it worked mostly, but since a while YT can access my FF addon settings and disables this addon automatically after YT is recognizing that Adblock Plus is installed and active, so it doesn't take effect anymore-> no block functionality anymore, biggest question is, how can YT access settings on FF and change them, and also, which other settings can be accessed from outside to FF?
by Mirso, 2025-04-15
View all user reviews

Add-on safety

Risk impact

Adblock Plus requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood

Adblock Plus has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** **** **** ****** ******* ********** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
Upgrade to see full risk analysis details

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