The best privacy tool and ad blocker extension for Firefox. Stop trackers, speed up websites and block ads everywhere including YouTube and Facebook.
- By:
- Ghostery
- Daily users:
- 870,248 -28,762
- Rating:
- 4.33 (4,612)
11 new ratings
- Version:
- 10.4.37 Last updated: 2025-06-17
- Version code:
- 5967751
- Creation date:
- 2008-11-15
- Risk:
- Very high risk impact Low risk likelihood
- Permissions:
- alarms
- cookies
- storage
- scripting
- tabs
- activeTab
- webNavigation
- webRequest
- webRequestBlocking
- unlimitedStorage
- alarms
- Size:
- 11.29MB
- Email:
- su*****@ghostery.com
- URLs:
- Website ,Privacy policy
- Full description:
- See detailed description
- Source:
- Firefox Browser Add-ons
- Updated:
- 12 hours ago
Ranking
# 18 ▼ 1
Other platforms
User reviews
Pros
- Effectively blocks most ads and invasive scripts, enhancing browsing comfort and privacy.
- User-friendly and informative interface suitable for casual users.
- Works well on many websites, including initially on YouTube ads, providing long-term ad blocking.
- Recommended by users for strong privacy protection and ad blocking capabilities.
Cons
- Recent updates have led to reduced effectiveness on YouTube, with ads slipping through or video access being blocked.
- Some websites experience functionality issues, such as problems with Amazon Pay, when Ghostery is active.
- Does not effectively block ads on certain platforms like Facebook.
- Cookie management may be inadequate, sometimes accepting all cookies contrary to user expectations.
Recent reviews
by Fi*****, 2025-06-19
by Fi*****, 2025-06-17
Работает хорошо, всё блокирует, но замедляет работу браузера, а также собирает телеметрию.
by Ch*****, 2025-06-17
Extension safety
Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk
impact extension cannot do much harms, whereas a high risk impact extension can do a lot of
damage like stealing your password, bypassing your security settings, and accessing your
personal data. High risk impact extensions are not necessarily malicious. However, if they
do turn malicious, they can be very harmful.
Ghostery – Privacy Ad Blocker requires a lot of sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
- Critical ******* ****** ** *** ********* ******** ********************
- High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
- High ****** ********* ** * ****** ******** ******** ********** * ******* ******* *****
- High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious.
This is determined by the publisher and the Firefox add-on reputation on
Firefox Browser Add-ons, the amount of time the Firefox add-on has been
around, and other signals about the
Firefox add-on. Our algorithms are not perfect, and are subject to change
as we discover new ways to detect malicious extensions. We recommend that you always
exercise caution when installing a Firefox add-on.
Ghostery – Privacy Ad Blocker 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
Compare add-ons
- Compare Ghostery – Privacy Ad Blocker vs Ghostery Private Search for Firefox
- Compare Ghostery – Privacy Ad Blocker vs Ghostery Private Search for Firefox
- Compare Ghostery – Privacy Ad Blocker vs AdBlock for Firefox
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