By: Ghostery
The best privacy tool and ad blocker extension for Firefox. Stop trackers, speed up websites and block ads everywhere including YouTube and Facebook.
Features & Capabilities
User Growth & Download Statistics
- By:
- Ghostery
- Daily users:
- 1,008,887 228
- Rating:
- 4.42 (5,591)
12 new ratings
- Version:
- 10.5.47 Last updated: 2026-06-16
- Version code:
- 6307700
- Creation date:
- 2008-11-15
- Risk:
- Very high risk impact Very low risk likelihood
- Permissions:
- Content scripts matches:
- *
- www.youtube.com
- *
- Size:
- 4.11MB
- Email:
- su*****@ghostery.com
- URLs:
- Website ,Privacy policy
- Full description:
- See detailed description
- Source:
- Firefox Add-ons Store
- Data ingested on:
- 2026-06-17
- Compare stats and ranking:
- Ghostery – Privacy Ad Blocker vs ProBlocker - Ad Blocker for YouTube & Web
- Ghostery – Privacy Ad Blocker vs Ad Blocker: Stands AdBlocker
- Ghostery – Privacy Ad Blocker vs Adblock Plus
Contact the developer
Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Permission Change History
2026-05-22: Version 10.5.42 → 10.5.43
Add Permissions: contextMenus
2025-02-26: Version 10.4.16 → 10.4.25
Add Permissions: activeTab
2024-10-28: Version 10.4.3 → 10.4.10
Add Permissions: unlimitedStorage
2024-08-19: Version 8.12.13 → 10.4.1
Add Permissions: alarms scripting ws://*/* wss://*/*
User Reviews
Pros
- Strong ad-blocking effectiveness across sites, reducing ads on most websites
- Non-intrusive, lightweight and easy to use with a single-click toggle
- Long-standing reliability and trust, used for years and considered essential
- Improves browsing experience and performance with fewer nuisances and smoother navigation
- Free to use and widely accessible
Cons
- Persistent 'leave a review' prompt that cannot be easily dismissed, causing frustration for some users
Recent reviews
This is the best ad blocker ever!!! Good to use with DDG.
by Ja*****, 2026-06-17
by Fi*****, 2026-06-17
Works very well and a little more user friendly than other popular ad blockers out there.
by bl*****, 2026-06-16
Is Ghostery – Privacy Ad Blocker Safe?
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 Add-ons Store, 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 good reputation and 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 **** ********* ** ****** ** ********
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