Completely remove ALL ads. No “acceptable” ads or whitelisted advertisers allowed. This free extensions also helps block trackers and malware.
- By:
- AdAvoid
- Daily users:
- 1,555,751+ -8,207
- Rating:
- 4.78 (26,365)
30 new ratings
- Version:
- 3.8.35 Last updated: 2025-05-07
- Version code:
- 5939041
- Creation date:
- 2016-02-18
- Risk:
- Very high risk impact Low risk likelihood
- Permissions:
- tabs
- <all_urls>
- webRequest
- webRequestBlocking
- webNavigation
- storage
- unlimitedStorage
- contextMenus
- tabs
- Size:
- 7.83M
- Email:
- su*****@adblockultimate.net
- URLs:
- Website ,Privacy policy
- Full description:
- See detailed description
- Source:
- Firefox Browser Add-ons
- Updated:
- a day ago
Ranking
# 9
User reviews
Pros
- Effectively blocks intrusive ads, improving browsing experience.
- Highly favored and used consistently over years by users.
- Considered better than some other popular ad blockers.
- Generally reliable and efficient in ad blocking.
Cons
- Whitelist functionality is imperfect; some whitelisted sites still require disabling the blocker manually.
- Annoying pop-up notifications appear every time a large number of items are blocked, which some users find bothersome.
- Concerns about security and efficiency warnings from Firefox, leading to some user apprehension.
Recent reviews
by makry007, 2025-05-23
by Ankit Bishnoi, 2025-05-22
by Firefox user 18789469, 2025-05-22
Extension safety
Risk impact
AdBlocker Ultimate 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 ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
- High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
- High ****** ********* ** * ****** ******** ******** ********** * ******* ******* *****
- High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
AdBlocker Ultimate 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 AdBlocker Ultimate vs Ultimate AdBlocker
- Compare AdBlocker Ultimate vs Ultimate Ad Blocker
- Compare AdBlocker Ultimate vs Ultimate Ad Blocker
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